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do cycle stop valves damage pumps

by Prof. Jennyfer Jacobs Published 3 years ago Updated 2 years ago

No, No, and NO a Cycle Stop Valve cannot damage your pump. The Cycle Stop Valve cannot close to less than 1 GPM, which is actually about 5 times more flow than it takes to keep the pump/motor cool and happy. What is the purpose of pressure tank? A pressure tank creates water pressure by using compressed air to bear down on the water.

Full Answer

How does a cycle stop valve reduce cycle times?

With the cycle stop valve the pump will run every time a faucet uses more than about a half a gallon of water. So where is this thing reducing cycle times? How about a full out draw on the system, say a couple of hoses running? Well, with a cycle stop valve the pump runs the entire time the hoses are running.

What is the maximum GPM a cycle stop valve can close?

The Cycle Stop Valve cannot close to less than 1 GPM, which is actually about 5 times more flow than it takes to keep the pump/motor cool and happy. Anyone who is not a "big fan" of CSV's, just doesn't understand how they work, as they lengthen not shorten the life of pumps.

Should a submersible pump have a cycle stop valve?

He cautioned that submersible pumps need a certain amount of water flow to keep them cool and a cycle stop can slow down the output to such a degree that it may overheat. My understanding is that a cycle stop valve will keep a pump running constantly as long as more than 2 or 3 GPM is being used, to prolong the life of the pump.

What are the different types of valves used in pumps?

These devices are known by several names. Constant Pressure Valve (or CPV), Cycle Stop Valve (or CSV), are the names most commonly used to describe a valve that mechanically controls the output flow from a pump to match the usage. These valves have no electronics.

What does a cycle stop valve do?

The CYCLE STOP VALVE model CSV125-3 is a pump control valve that automatically adjusts your pump to match your variable demands. This enables it to hold a constant pressure as long as your demand is more than the minimum control flow of 1 or 3 gpm depending on the model you choose.

How a pressure tank works and why you need a cycle stop valve?

3:0212:05How a Pressure Tank Works and why you need a Cycle Stop ValveYouTubeStart of suggested clipEnd of suggested clipThe longer you experience low pressure in the shower before the pump is started and strongerMoreThe longer you experience low pressure in the shower before the pump is started and stronger pressure is achieved. This animation simply adds a cycle stop valve or CSV to the traditional.

What causes a pump to stop?

Your well pump is designed to shut off once it reaches a certain pressure. A significant leak anywhere in the well piping lowers the water pressure in the system. So if the pressure is too low, your pump won't shut off and instead will continue running all the time.

How do I reset my cycle stop valve?

The unit can be reset by pressing the manual reset button or by shutting off power to the unit and then powering back on. The "Rapid Cycle" feature of this relay monitors the duration of time the pump is on.

What is the difference between a stop valve and a gate valve?

The stop valve has specified inlet and outlet directions; the gate valve has no requirements for inlet and outlet directions. Gate valve can only be fully open or fully closed. The stroke of gate opening and closing is very large, and the opening and closing time is long.

What is a pump cycle guard?

The Cycle Gard® provides proven pump cycling protection for water well systems, irrigation and booster systems and is designed to stop rapid pump cycling, save electricity, eliminate water hammer while providing a constant pressure regardless of water flow.

What are the common problems happened to the pumps?

Pump Motor Won't StartPotential CauseHow to FixBlown fuse or breakerClean out the strainer and ensure it is free from obstructions which could clog the suction inlet.Starter overheatingCorrect cause of thermal overload and reset the motor.Low line currentInspect lines and fix the problem.1 more row•May 24, 2018

What can spoil pumping machine?

These fibres can easily become tangled around the rotating parts of the pump, building up over time until they cause a serious obstruction and the pump stops working....These wipes can include:Nappy wipes.Antibacterial wipes.Wet wipes.Makeup remover pads.Disinfectant wipes.

Where should a cycle stop valve be installed?

The CSV (Cycle Stop Valve) should be installed downstream of the pump on the pump side of the pressure tank / pressure switch. Everything pumped needs to go through the CSV before it goes anywhere else. Any and all water outlets have to be downstream of the CSV valve.

Why use cycle stop valves?

The main reason to use soft start equipment is to reduce the end rush of electricity on pump start up. This will reduce the electric bill if a demand charge is included. Some electric companies require soft starts on larger horsepower systems. When soft start controls are needed, an auto-transformer type soft start will do an excellent job of reducing end rush currents. These auto-transformer soft starters are mechanical devices that will eliminate the problems associated with troublesome electronic soft starters and variable speed drives.

How does radial deflection affect centrifugal pumps?

Radial Deflection increases on centrifugal pumps as the flow rate decreases . The impellers on pumps with a single volute tend to push at odd angles to the cutwater vane as flow is decreased. As long as the shaft and radial bearing are strong enough to handle the load, very little if any deflection is possible. Pump companies should not manufacture pumps with shafts that are too slender and bearings too weak to handle this deflection, unless the pump is designed with planned obsolescence as a primary objective. Pumps with a diffuser ring such as submersibles, turbines, and multistage centrifugal pumps, will equally distribute the discharge from the impeller. This makes deflection to any one particular side impossible and radial deflection a non-issue.

Does back pressure make a pump work harder?

Increasing backpressure does not make pumps work harder. One horsepower is the measure of power it takes to lift 33,000 pounds of weight one foot in one minute. Gallons and weight are the same thing to a pump. Restricting the flow from the pump with a valve, backpressure will increase. As backpressure increases, gallons or weight decreases. As the weight or gallons of the water being lifted by the pump decreases, so does power consumption, amps, or horsepower. Excess backpressure is a free by-product of horsepower. Backpressure makes pumps pull less amperage not more. Less amperage, means motors run cooler, use less electricity, and last longer.

What is the purpose of a cycle stop valve?

A Cycle Stop Valve or CSV is a simple device that drastically reduces the number of times a pump is cycled on and off. The Cycle Stop Valve can be used with very small pressure tanks and still double or triple the life of any pump or motor.

How does a cycle valve work?

When the pressure increases above the set point, the valve moves towards the closed position. By varying the position of the valve to maintain a constant pressure, such as 50 PSI, the output of the pump exactly matches the amount of water being used.

How many years will a well pump last?

Depending on the equipment type and model, well pumps typically last anywhere from 8 to 15 years. However, several factors can contribute to the premature expiration of a well pump.

Where should a cycle stop valve be installed?

The CSV (Cycle Stop Valve) should be installed downstream of the pump on the pump side of the pressure tank / pressure switch.

Is a 20 gallon pressure tank big enough?

A 20 GPM pump needs a tank with 20 to 40 gallons of storage. Almost 2/3s or more of a tanks volume is filled with compressed air, it takes a very large tank to hold 10 to 40 gallons of water. The higher the pressure switch setting, the less water volume a tank can store.

Where should a pressure tank be placed?

The tank used should always be at the end of the small water line, or without water flowing past or through it. When the switch is placed in this location, the volume of water inside the bladder tank must change before the pressure switch will see any difference in pressure.

What is a Pside kick?

The PSIDE-KICK pressure tank kit is a complete constant pressure control package for most pump systems with demands from 1 to 25 gpm. Replaces large pressure tanks. The 10 gallon kit can only be installed with the tank up or down not sideways.

How many GPM does a pump need to be to cycle?

This prevents the valve from ever clogging, while maintaining a minimum of 1 to 5 GPM. Now the pump cannot cycle, even when flow as low as 1 GPM is being used. The pump also has the required minimum of 1 to 5 GPM to remain cool, without fear of clogging a small drilled bypass hole.

How does a valve work?

The valve mechanically senses down stream pressure, and a pilot valve or spring mechanically controls the valves position. When pressure decreases below the set point, the valve moves toward the open position. When the pressure increases above the set point, the valve moves towards the closed position.

What is a CSV valve?

The function of a Cycle Stop Valve (CSV) is to: 1 Provide variable flow and constant pressure control superior to VFD systems 2 Replace large pressure tanks and water towers 3 Provide minimum flow required to cool the pump and/or motor 4 Provide minimum flow to replenish the pressure tank when needed 5 Eliminate transient pressure waves and water hammer, stop line breaks

What is a CSV pump?

The CSV creates a mechanical soft start and soft stop, which eliminates water hammer. An electronic soft starter can be used with a CSV, but is rarely needed as the CSV minimizes the number of on/off cycles. When the points in the pressure switch open, no voltage is maintained on the system while the pump is off.

What happens when a boat pump clogs up?

This small hole is responsible for the flow needed to cool the pump and motor. When this hole clogs up, the pump is destroyed in only a few minutes. To try and prevent the hole from clogging, a much larger hole is drilled.

When the points in the pressure switch open, is the pressure maintained?

When the points in the pressure switch open, no voltage is maintained on the system while the pump is off . The CSV does not use any power itself when the motor is running, or when the motor is off. The power consumption of the pump/motor naturally decreases as flow is decreased with the CSV.

Does a cycle stop valve have a hole?

Even a larger hole will still clog it just takes it a little longer. The Cycle Stop Valve does not have a hole to clog. It has a non-closing seat, with two half moon notches, that come together to create a hole when the valve closes.

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