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Rebeca Santana

Pressure Boosting Systems – Pt3

By | Pressure

With few exceptions, the water demands of a Commercial Building are significantly overestimated, which has negative impacts on the long-term performance, reliability, and efficiency of a Booster System.  At Cougar USA, we design our systems to be most efficient at the partial load of the building, which improves performance & reliability and reduces operating costs.  In this Tech Talk, we cover the pump and system selection for Booster Systems.

Make sure to check out Parts I & II!

Pressure Boosting Systems – Selection – Part 3 Tech Talk Transcript:

Hi, I’m Tim Zacharias with Cougar USA, on this Tech talk we’re going to be going over system selection for pressure-boosting systems in commercial building applications. This is part three of a three-part series. So please check out Parts one and two if you haven’t already.

Now that we’ve determined our flow in our pressure for our building, we can take those and make an actual pump system selection. Based on our fixer unit counts for the worst-case scenario and specialty applications we have a potential load requirement thereof 300 gallons per minute, but we do want to take into consideration that partial load and that diversity factor that we talked about, the 15%. So we’re looking at about 50 GPM, there, is really where this pump is going to be operating most of the time. We want to pick our pump selections based on this 50 gallons per minute and not necessarily 300 gallons per minute.

In order to be covered, we want to make sure that we have enough pumps to cover that worst-case scenario if needed. So with the Grundfos Hydro MPC system boosterpaq, you can go up to five or six different pumps, so we can really get in, dial-in that pump selection to get it where we need it to be.

So what we don’t want to do is Select that pump, you know, let’s say we want two pumps, we want some redundancy. Set two pumps at 300 GPM each, so we’re going to be 100% redundant there. But, really, those pumps want to operate way out here and not back here at this partial load. A pump that is going to be efficient out here at this 300 GPM, is not going to want to operate back here at this 50 GPM where we’re going to see that load most of the time. So, instead, we’re going to pick based on this 50 gallons per minute and have multiple pumps. So we can do that, we can break this up into thirds, we can do 33-33-33 each at 100 gallons a minute. We could do 50-50-50 pumps at 150 gallons a minute each, or you can do four pumps at whatever, you know, 60 or 75 gallons a minute, start to add up your redundancy.

Now, when we’re looking at the redundancy, you know again this 300 GPM is going to be the worst-case scenario. Probably never going to hit that, so even if you were to go in this case, we’re going to do three pumps, each at 100 GPM, and really where that redundancy is going to come from is the diversity factor in the building. If you wanted to have an n + 1 you could go 4 at 100 or we could do a 3 at 150, but in any case, we really want to keep that pump selection to 100 to 150 GPM per pump because those are going to operate best at that partial load condition. They’re going to be able to run at this reduced speed and still be efficient, still be within their preferred operating range.

A couple of different options to give you some redundancy there, just depends on, you know, having a type of risk or how close are you going to be to the actual worst-case scenario there. But again, we would advise that you go with smaller pumps and had more of them to cover the redundancy rather than doing less larger pumps.

Okay, so that would be our flow right here, any of those selections would work well. When we’re talking about pressure now, remember we have to consider that pump versus the system boost. We want to make sure that our pump boost is correct, and in the city of Houston, that’s going to match the system boost because we’re starting from zero and that was 150 PSI or about 350 feet based on our example and again that’s represented here. But we want to look at when we’re selecting our pump, where we are going to be operating at these partial loads. It’s easy to select the pump out here where we are running it at 100% and we are satisfied that that Duty point, but ultimately again, we’re going to be operating back here somewhere at these partial speeds. So these could be in 95-90-85-80 even lower, potentially, depending on your flow rate. Where that pump is going to operate as the demand slows down so as that the man reduces the pump speed is going to slow down to maintain that constant pressure at the different flow rates

So we would like to see the pump be able to maintain Pressure at 80 to 85% speed at the partial loads. So if we can get to this 50 GPM and maintain 350 ft at about 80 -85% speed. That’s where we’re going to want to be, that’s going to give us the additional flow that we need as the demand increases. It also gives us some additional head in the system if we need it for whatever reason if we need to increase our set pressure.

So really two important takeaways here are going to be that our pumps are between we’re looking to try to select our pumps that do about 100 to 150 gallons a minute and add multiple to get redundancy and our worst-case scenario covered and then on the speed on the head side. We want our pumps to be able to maintain our set pressure at about 80 to 85% speed at that partial load condition.

If you have any questions on systems selections or anything that we’ve covered please reach out to us or check out our other videos. Thanks.

Pressure Boosting Systems – Pt2

By | Pressure

The primary purpose of a Pressure Boosting System is to maintain constant pressure in the building (surprising, right?!).  In Part II of this Tech Talk, we explain the factors to consider when determining the pressure requirements for a building. 

Pressure Boosting Systems – Pressure – Part 2 Tech Talk Transcript:

Hi, I’m Tim Zacharias with Cougar USA. On this Tech talk, we’re going to be talking about calculating the system pressure required for a pressure boosting application of a commercial building. This is part two of a three-part series, so if you haven’t seen part 1 on the flow calculation, make sure to check that one out as well.

When we are looking at the pressure required for a pressure boosting system in a commercial building, the first thing we wanted to look at is our static pressure. Now, this is going to be literally what the weight of the water is to fill up the riser in the building and get it to the top of the building. So our very nice and friendly building over here is 20 stories at 231 feet so if we were to convert that to pressure, that would be 100 PSI. So if we filled this riser in this building with water, but it wasn’t under pressure we would see 100 PSI on our gauge, that would be our static pressure. Now, a little trick that we use a lot of times on existing buildings is a lot of times we don’t always know what the actual height of the building is, so we can kind of back into it by looking at the number of floors of boost. So if we assume that every floor is about 10 to 12 ft that’s going to be about 5 PSI per floor, and you can see our math works out pretty well in this one to be similar to 100 PSI not always going to be the case and all buildings, but it will get you close.

So for this example, we have 100 PSI as our static pressure. Now, the residual pressure is anything else that we need on top of our static pressure to make the water usable at the top. Our cooling tower is going to be one of the main reasons that we need this additional residual pressure up at the top. It could also be for our flush valves, it could be to go to water heaters, whatever it is, make sure that you have that residual pressure. We’d like to see a minimum of 45 PSI, that’s going to be able to get you through backflow preventer, and then out to the cooling tower, you know, if you got to go also through a softener and things like that and you might want to have a higher residual pressure than that.

Another thing to consider is going to be friction loss. Now, to calculate the actual friction loss in the building you’re going to want to have the length of pipe and any set fittings, things like that, to be able to convert those two equivalent lengths of pipe and then look at your flow rates to see what your actual friction loss is. When we’re dealing with pressure boosting applications, typically, we are going to be looking at lower flow rates most of the time, you know, 2200 gallons per minute, and if we have decent pipe sizes (2 inches and larger) the friction loss and can be pretty minimal. So we do have some, but for this example, we’re going to go pretty low and just have the 5 PSI there for friction loss, so that would give us a system pressure of 150 PSI. Now what that means is that we need that pressure here, at the bottom of the building, we need to have 150 PSI on the discharge of our pumps to be able to see this 45 PSI up here at the top for it to be usable.

So that’s what we’re going to want to see in the discharge of our pump system. And the other thing that we need to consider once we have our system pressure is, what are we getting from the city supply? Now, this gets a little bit complicated when we working in the city of Houston, because we have the code requirement to go through the atmosphere storage tank. So inside the city limits of Houston, our City supply is going to be zero effectively. We do get whatever the head is in the tank, but for these purposes, we typically use a zero as our suction pressure.

If you were in a municipality that did not have that code requirement, you could take whatever the city supply pressure is from the city and subtract it out from this here. So I will show you what that looks like. Let’s say that we have a 50 psi coming in from the city, we would have 50 PSI that we would subtract from our system pressure there, meaning our pump boost is only 100 PSI. So out of the 150 PSI required for the building, the pumps are only responsible for 100, the city pressure is taken care of 50 of that. But what we are dealing with most of the time here in Houston is where we have zero pressure coming in from the city because we were starting from that storage tank.

So we’re going to show that example here, and the effect that has on the pumps elections if we assume, Zero here for incoming pressure, now our pump boost is going to be the same as our system pressure. So the pumps are going to be responsible for all of the Boost that is in that system pressure. It is very important to know if you have to go to the storage tank or not so you can see how much that affects the pump boost that is required.

Make sure you check out part 1 and part 3 of this series. Part 3 we’re going to look at how to take your flow and pressure calculations and turn them into a system selection.

If you have any other questions, please feel free to reach out or check out our other videos on our site. Thanks

Pressure Boosting Systems – Pt1

By | Pressure

Pressure Boosting Systems are essential for delivering water to high-rise buildings; however, the method for sizing these systems has not changed significantly in over 50 years!  Cougar USA’s High-Performance Design approach combines our extensive knowledge & experience with the best products on the market to deliver systems that provide constant water pressure with little to no downtime and the lowest Life Cycle Cost.  Check out this three-part Tech Talk series on Booster System Design to see how we do it.  We will cover the flow and pressure requirements of a building and pump & system selections to meet them.

Pressure Boosting Systems Design Part 1 Tech Talk Transcript:

Hi, I’m Tim Zacharias with Cougar USA on this Tech talk, this will be the first of a three-part series for sizing and selecting pressure boosting systems. On this one, we are going to be looking at the flow rate for a commercial building.

Now, a couple of different things that we need to take into account when we are looking at flow. The first place that we can start is Hunter’s curve in the fixture unit counts. This is a method that goes back to the 1960s. Basically, we can count up our fixture units in the building, look at the chart for what that says the equivalent flow rates are, and what that is going to give us is our worst-case flow rate for that building.

So if every fixture were to turn on and we needed that flow rate, what does that give us in terms of flow?

Now, the floor in Hunters curve is that it doesn’t take into account the diversity of usage and we’ve done flow audits on commercial office buildings, with and without cooling towers, we’ve done hotels, we’ve done hospitals, other types of buildings. And consistently we found that most of the time the usage is about 15% of what our worst-case scenario is for that building, meaning, 75% – 80% of the time we’re running at a partial load condition that is about 15% of what curve is predicting. Now, what that looks like on a pump curve, if we have our flow and head of our pump curve, is that if we were designing to this duty point here, that if that is our duty point, our design, you know, based on Hunter’s curve, really what we are going to see is an operation back here most of the time. This is where our partial load is going to be. So we really want to focus on the partial load condition when we’re selecting our pumps because that’s what they’re going to operate the most, that’s what we wanted to be most efficient because the pump that we select for this duty point is not going to be efficient or operate well at this point.

The other thingS that we have to take into consideration are any sort of special applications. Now, the number one in a commercial building is going to be make up to the cooling tower. Cooling tower, especially a commercial office building, even potentially in a hotel or other type buildings make up to the cooling tower is going to be the number one consumer of water, maybe anywhere from 20 to 80 or 100 gallons a minute, depending on the size of the cooling tower, the makeup line, the type of fill valve that’s used to make it up, but we need to take that into account when we are looking at our worst-case scenario in terms of consumption. So definitely want to make sure if we’re making up to the cooling tower that we have that covered.

Other things that could have large instantaneous demands, kitchens, dishwashers, you know, you could have sterilizers in the hospital, you could have a big sudden demand of all of these things if you have any sort of specialty processes in the building, you want to account for those and plug those into your worst-case scenario.

But if we’re talking, you know, very simple building, just has cooling tower, you know, men’s and women’s restrooms and a little kitchen on each floor, this 15% of our worst-case scenario is going to be a pretty accurate way to go when you’re determining your flow rates.

So, again, if we were to say that Hunter’s curve said that we needed, let’s just say it’s a simple building here, one hundred gallons per minute. You know what we’re really going to be wanting to design to is back in this 15 to 20 GPM range here.

All right. So we’re going to have two other videos as part of this to cover the pressure selection and then ultimately the pumping system selection for pressure boosting applications. So please check out those videos or reach out if you have any other questions.

Water PRV Sequence of Operation

By | Uncategorized

A High-Performance Water Pressure Reducing (PRV) Station requires valves that are properly sized for the flow rate and pressure drop of the zone they serve.  Also, the High Flow and Low Flow valves must have the proper pressure setpoints to balance the flow rates across them.  Cougar USA can help in the design, installation, and start-up of PRV’s to ensure constant pressure to the fixtures downstream of the PRV Station.

Water PRV Sequence of Operation Tech Talk Transcript:

Hi, I’m Tim Zacharias with Cougar USA on this Tech Talk, we’re going to be covering the sequence of operation for a Water Pressure Reducing Valve station or PRV station.

For this example, we are looking at a PRV station here that’s designed for a high-rise building. We’re generating a lot of pressure with our booster system, down the lower floor to be able to have usable pressure up at the top of the building, and in the lower floors, we’re having to knock that pressure back down to get it below 80 PSI.

So, for this example, our low flow PRV is going to be set at 70 PSI, our high flow will be set at 65 PSI, and our relief valve and pressure switch here are going to be set to 85 PSI, so 15 PSI above our set point. So, 70 PSI, 65 PSI, and 85 PSI here. The relief valve can’t be set to higher than 100 PSI by code, so usually, 15 to 20 PSI above your low-flow valve is where that set point is going to be. We’re going to start the sequence, assuming there’s no flow in the building, so both valves pressures are satisfied, we have no flow going through the valve system, and they are shut. Once you start to get a little bit of flow through the station here, let’s say it’s serving a few floors, a few restrooms kitchen, things like that, you start to see some activity. We’re going to see the pressure drop off and our low-flow valve here is going to start controlling it at that 70 PSI, so it’s going to modulate open close to maintain that 70 PSI going through the valve.

Now, as the flow demand increases, that flow rate increases, the low-flow valve is not going to be able to keep up and the pressure is going to start to drop off and once that pressure drop gets down to about 65 PSI your high flow valve is going to open up and start to control at the 65 PSI. So our low flow valve is all the way open, and we are controlling with the high flow valve here at the 65 PSI. Now, this one is going to continue to control until it’s satisfied. So, once the demand starts to slow down and the pressure is going to rise up again, and once this valve is satisfied at 65 PSI, it will close, and this valve will take over controlling at the higher pressure. Once that pressure comes back up, it will start to control again at the 70 PSI until there’s no flow and then it will shut off as well, and that cycle is just going to repeat as you have changes in flow rate across the system. Low-flow valve handle on the overflows; high flow in the high flows there.

Now, if you have an upset condition where one of these valves fails, it will fail open, which will allow the high pressure to come downstream. You’re going to see the relief valve open up at that 85 PSI and start to relieve the pressure and dump water to drain. At the same time, we’re going to sense that pressure here with the pressure switch and that is going to send the signal to our control panel here that I can simulate with the button and that is going to after that time delay it is going to close the block valve.

Now we have the time delay in there so that, you know, a short over-pressurization that is not caused by a failure valve won’t kick off this sequence, it has to be sustained in order to trip the alarm. So once the alarm is triggered here, it’s going to send a signal to the building automation using an output there and it’s also going to close the motor-operated butterfly valve or ball valve there that is our block valve. It is going to hold that valve closed until it is manually reset. So if we are to have this pressurization event and we allowed the valve to automatically reset. As soon as the valve closed, the pressure would drop downstream, the pressure switch would sense that, and send a signal to the control panel. It would allow the block valve to open. The block valve would open, we would have high pressure coming back thought. It would go through the field PRV, hit the relief valve again, over pressurize, hit the pressure switch. It would send a signal to the control panel, which would close the block valve again and you just be stuck in this circle of opening-closing the block valve, basically trying to maintain pressure with an MOV and that’s not going to be a good application or good control method for doing that.

So instead once we sense that high-pressure, we close the block valve and hold it close until it is manually, reset and opened. So before manually, resetting it, we want to close the downstream valves there, and then, press to reset. That’s going to open our block valve, allow the high-pressure to come up to these isolation valves here, and then at that point, you could slowly open these up, refill Downstream with water and see if the pressure goes past its set point. If it does, you can leave that valve closed and you can open up the other valve and allow it to control. Now, you can isolate this valve completely, do your service on it, and while you still have water flow through the other valve.

So, that is the breakdown of the sequence of operation for a Cougar Systems Water PRV station. If you have any questions, please feel free to reach out or check out the other videos on our website.

Thanks

Storm Sump Pump Stations

By | Uncategorized

Storm Sump Pump Stations protect the lower levels of buildings and parking garages from flooding.  Check out this Tech Talk on the application and design of Storm Sump Pump Stations.

Storm Sump Pump Stations Tech Talk Transcription:

Hi! I’m Tim Zacharias with Cougar USA. In this Tech Talk, we’re going to cover storm Sump Pump Station applications.

So when we’re looking at a storm sump application this is going to be anything in a building that’s collecting water from a clean source, rain, groundwater, condensate from Air Handlers, or fan coil unit, things like that. And it’s going to be in the typical locations in a building: at basement, parking garage, loading docks, spots where the water’s going to collect. We are typically going to recommend in this situation an N+1 design, meaning, both pumps can handle, one hundred percent of the load coming into the Basin. But in Houston, unfortunately, we have these high rainfall events where it might be normal or require two pumps to run in certain situations, so that’s going to affect the type of float switch assembly that we use and some of the programming so that we can run those two pumps with or without alarms.

So one way to do that is with a 4 float system in the Basin with a lag pump counter. It is going to allow us to run both pumps without getting a high-level alarm. But with that lag pump counter, we’re going to be able to see how often that pump is coming on and give an alarm if it’s over the threshold.

The type of pump that we are going to recommend for this application is going to be a large, non-clog-style pump. So, that’s going to be either a Vortex or an open Channel type impeller. They can still handle some solids, but they’re going to be able to move large volumes of water, typically into a gravity main type of discharge.

So what are these components that make up a storm station or Storm Sump Pump Station? the design here on the screen is what we would consider a typical sump pump station or duplex application. Using submersible pumps instead of a column style or extended shaft style Pump, we’re going to have a control panel and level float switch assemblies to be able to give that indication of the level in the water and then turn our pumps on and off, and give alarms. Also, we are going to have a lift-out rail system, for those submersible pumps so that they can connect to the discharge piping easily, but still be removed out of the pit for service and things like that for access.

We are also going to recommend, obviously, the isolation valve and some check valves like we’re showing them here through the discharge out of the top. It’s nice to be able to access them outside of the wet well. You could also do a valve box off to the side here with a separate access hatch for those valves to be able to get to them without having to get into the wet well. If there are space requirements and it does have to be inside the wet well, they will work there, just a little bit tougher to access them for maintenance.

The last piece is going to be the cover and that hatch is going to provide safety over the top of the pit and prevent Open Access into the wet well. It will also give you some structure and stability for the upper guide brackets of the rail system attaching there so that the pumps can come up and straight out the top of that hatch to be serviced.

So, that is what we want to cover on our Storm Sump Pump Station applications. Check out other Tech Talks for more information for feel free to reach out.

Flood Protection Valve

By | Uncategorized

Rain isn’t the only way a building can flood. If there are Domestic or Fire Water Storage Tanks in the building, a flooding risk is always present.

Cougar Systems Level Controls constantly monitor for High Level and actuate a motorized valve to shut off the water supply to prevent overfilling the tank and flooding the space. 

Flood Protection Valve Tech Talk Transcript:

Hi, I’m Tim, Zacharias with Cougar USA. In this Tech Talk, we will cover flood protection valves for fill stations and atmosphere storage tanks. In the city of Houston, we have the requirement to go through the atmosphere storage tank before we add booster pumps into our building. So, a lot of these are going to be installed on the first floor, maybe in a basement on a vault outside, and we want to prevent those tanks from overflowing and flooding the building.

In order to do that, we have level sensing devices in the tank there sending that level read out to the level control panel like this. We use a motorized butterfly valve Upstream of our fill valves as our Safeguard to prevent the tank from overflowing and flooding the room.

So we have the high-level alarm set based on the height of the tank in inches, and once that level is reached, it’s going to signal the high-level alarm, as well as trigger the block valve. Now the block valve is going to stay closed until the tank level is drawn down, and then it will reset the high-level alarm, open up the block valve, and if one of the fill valves has failed and is still allowing water in the tank, it will refill and hit that high-level alarm again and trigger the block valve to close, so, your block valve will essentially act as a backup fill valve, but it’s going to trigger that high-level alarm every time which is one of the reasons we definitely recommend monitoring that high-level alarm with the building automation so that they can get those alarms and that feedback that the block valve is on. So we prefer using the butterfly valve with the motorized operator for those two reasons,

The other alternative is to use an electronic Cla-Val like this one 3601 that we use for the fill valve. This makes a great fill valve because we have constant or regular flow through the valve, through the fittings, in the solenoid that keeps them clear of trash and debris and allows for that diaphragm to load and unload every time.

So if we have one of these solenoid valves, this 1-3601, as the block valve, it’s going to sit in the open position most of the time, and it’s going to have water flow through the body of the valve, but not necessarily through the tubing and through the solenoid. So, you could have trash build-up on the solenoid or somewhere in the strainer there, or anywhere else in the pilot, things like that. So when you do get the high-level arm, and you do need to close it, this valve will send power to the solenoid, which is going to try to open up and load water onto the diaphragm to close it.

Now, if water can’t get into the tubing or through the pilot, that’s not gonna let water on the diaphragm and allow it to close. The other issue we would have is that the solenoid valve requires constant power, in this case, 120 volts to hold the valve closed. So if we had a loss of power or an issue with the control panel or even if the solenoid failed. Any one of those three, you would lose power to the solenoid and the valve would go back to its normally open position, and then you would overfill your tank. With the motor-operated valve, the butterfly valve can sit for long periods and not have the issue of being able to close because it’s been sitting open for long periods. Also, with the motorized actuator here, we send one signal from the control panel to open the valve and a separate signal to close the valve. Once it is in the open or closed position, it will stay there until we send the second signal to move again. So we’re only sending a signal to move the operator, not to hold it in the open or closed position.

If you have any other questions about the flood valve or the flood protection valve and why we’ve gone with the butterfly valve in the motorized actuator, please feel free to reach out or check out other Tech Talk videos for more information.

Thanks.

Cougar USA has worked in hundreds of buildings in Houston with break tanks, level controls, and booster systems. For more information or a free building assessment, contact us here.

Monitor City Pressure

By | Uncategorized

In the city of Houston, we’ve had two major interruptions in water supply in the last 18 months. Unfortunately for many buildings, they didn’t find out until their tank and piping were dry and it was too late to act.

With a Level Control Panel from Cougar USA, you can monitor incoming city water pressure and receive an alarm as soon as the pressure drops, giving you time to conserve water and warn patients, tenants, and guests of the situation.

Monitor City Pressure on Fill Stations Tech Talk Transcript:

Hi I’m Tim Zacharias, with Cougar USA. In this Tech Talk, we’re going to cover Monitoring City Pressure on your fill station so when you have a flooded suction application, like in the city of Houston, where we have the code requirement to go through an atmosphere storage tank, like this before your booster pumps.

If you lose City water, then a lot of times, the only indication that you would have or the only warning that you would have would be a tank low-level alarm. So that would mean that you’ve lost city water you’ve drawn your tank all the way down. You get your low level from the panel and that’s almost too late for that’s really when you’re out of water.

So if you’re monitoring City pressure coming in on the inlet of your fill station and you lose City pressure, that’s going to be a really early indication that you might have an issue that you’re going to, you know, probably run out of water and then be able to make changes to mitigate that.

To simulate that here on our control panel, you can see that we have the read out of what the city supply pressure is coming in so you know being fair here at 40 PSI for the City of Houston. A lot of times we have pretty low pressure but if that drops down below, our set point, what’s going to happen here is we’re going to get the low supply pressure alarm and, this is adjustable, Ss have a little bit of a delay there. Just in case we have a blip in pressure, is not going to give a false alarm. But once we get that low-pressure alarm, you can see it doesn’t actually stop to fill valves from filling or anything like that. It’s just going to be an alarm output to the building automation, to let you know that you’ve got low City pressure so that you can silence it there and then it is adjustable here under the alarm settings, what that supply pressure is, so that can be adjusted as well.

So once the city pressure is restored, the alarm clears and everything is back to normal, but again, monitoring this incoming City pressure is a great way to give yourself an early heads up that your building is going to lose water and especially monitoring this, so that you’re getting those to the building automation. You can do that through what we call a Fail-Safe dry contact where you’re going to get the alarm if you have either an actual alarm, a power failure, or control power failure, we can also do communication over in a back net so that you can actually get the readout of the city pressure is as well as the alarms.

If you have any questions, please feel free to reach out or check out other videos.

Thanks.

Cougar USA has worked in hundreds of buildings in Houston with break tanks, level controls, and booster systems. For more information or a free building assessment, contact us here.

Float VS Electronic Fill Valves

By | Design, Level

Fill Valves are the heart of a tank-level control system (making the control panel the brain).  There are two common types of fill valves, Float, and Electronic, used in commercial building tank fill applications.  While both can be effective, the electronic float valves (and paired controls) provide extended life through even wear, improved communication with the BAS, and ease of service. 

Float vs Electronic Valves Tech Talk Transcription:

Hi, I’m Tim Zacharias with Cougar USA.

On this Tech Talk, we are going to cover the difference between the float style and electronic style fill valves for storage tanks. So in the city of Houston we have this code requirement where you have to go through an atmospheric storage tank before you add on a pressure boosting system.

To pressurize your building, you got two options on which type of fill valves, you would use for that tank. The style that’s been around for a long time, is going to be this one 2401 float valve from Cla Val using the 100-01 Hytrol valve, base valve configuration and we’ve got this CF1C1 Pilot assembly here that is controlling the water on, and off the valve to open and close it.Now, this is a mechanical assembly you got the float hanging down in the tank and literally just like the back of a toilet, you know, the float goes up the valve is going to turn off the flow goes down the valve is going to open up and refill the tank. Problem with these style valves is it’s mounted up on top of the tank it can be difficult and even dangerous to get in and service it and it’s all mechanical in terms of how you make any adjustments, how it turns on and off and when you have two of them, there’s no way to alternate which valve is the lead valve.

Now in general with Cla-Val valves like these you’re going to want to have regular water flow through the tubing and any pilot assemblies to keep them free of trash and debris. That’s going to ensure that the valve is going to open and close when you need it to. So we really moved away from the float style valves being our bassis of design, and our recommendation is going to be to go with this. The 136-01, the electronic style fill valve still using that 100-01 hytrol valve as a base valve, but instead of the mechanical pilot assembly, we’ve replaced that with an electronic solenoid. So, when were using this style of valve, we can put it into an assembly like this comes off of the top of the tank can be easily accessible safe to work on and we pair it with an electronic control panel, like a Cougar Systems Elite Series there that allows us to actually read the level in the tank and make our settings on the control panel there of when we want our valves to turn on and off when we want to get our alarms, as well as being able to alternate the fill valve. So every time, the tank Cycles to fill up, it’s going to switch which fill valve is filling the tank that’s going to give us that regular water flow through the valve and through the fittings, so that we don’t have any issues or get any trash or debris, things like that in there.

So when we’re working with the electronic series here, there are a couple of different options to consider that the two inch size and smaller, we are going to recommend that you do the 136-01 Series without closing speed control. So, closing speed control is a needle valve and the tubing, that allows you to restrict the water flow onto the top of the diaphragm and that slows down how fast the valve closes. and that is going to help reduce water hammer in the piping, but the two inch size dont really need it, and it can create additional restriction through the tubing in, in the solenoid, to be able to close the valve.

So don’t recommend the closing speed on the smaller ones, we get 2/3 inch and larger we are going to switch over to the 136 03 series and that’s going to have a larger solenoid to give you a little bit more water flow onto the top of the diaphragm as well as including the speed control to reduce the water hammer. We’re also using the epoxy coating and the stainless steel trim on these which can give you a longer life and wear on the valve body seat, things like that.

So those are going to be our recommendations again on the fill stations to go with the electronics series, The 13601 or 13603, and pair it with the electronic level control system like you see here in order to give you a lot more control and even wear on all the valves.

If You would like any more information please reach out or feel free to check out other Tech Talk videos.

Cougar USA Appoints New President, Expands Leadership Team

By | General Info

We are excited to announce the promotion of Tim Zacharias to President of Cougar USA!  Tim has been with the company since 2007, having worked in various roles, most recently as Chief Operating Officer since 2017. 

Mike Zacharias has served as President since co-founding the company in 2003 and will continue to work with Cougar in sales and as Chairman of the Board.  Scott Magee, co-founder, will continue his role as Vice President and as a member of the Board of Advisors. 

The Leadership Team has expanded to include three new members.  Randy Milian and Steve Hale both join as Operations Managers of Cougar Sales and Cougar Systems, respectively.  Both are exemplary members of the Cougar Family, and we are excited to see the new insight and perspective they bring to the Leadership Team!

Earlier this year, our CFO Deanna Parmenter retired.  She joined the company in 2015 and was vital in Cougar USA “growing up” in the last few years.  Instead of hiring a direct replacement, Cougar USA has entered into a shared services agreement with STH, Inc, a partner rep firm out of Maryland.  STH is providing fractional CFO, HR, and IT support to Cougar USA.  JD Slough, CFO of STH, also joins the Cougar USA Leadership Team in the fractional CFO capacity.  Our partnership with STH, JD, and his team is already very strong and mutually beneficial.

We believe the new leadership structure will allow us to better serve our employees, customers, partners and take Cougar USA to the next level!