Where does the check valve go on a well pump?

1. Check Valve Located at the top of the pump to prevent back flow into pump and hold the head of water in the system. 2. Torque Arrestor Installed directly above Submersible Pump to protect pump and well components from starting torque damage.

Does a submersible well pump have a check valve?

In submersible pump applications, the first check valve should be installed directly on the discharge head of the pump or maximum one pipe length (20 feet) above pump. Water pumped and flowing through a piping system has a certain amount of energy (weight x velocity).

What is a check valve on a shallow well pump?

Check valves are designed to permit water to flow in one direction and are a requirement on all submersible pump installations. Their job is to prevent water in the column above the pump and in the pressure tank from draining back into the well when the pump shuts off.

How much does it cost to replace a check valve on a well pump?

The device itself ranges from $35 to $600, while professional labor costs between $100 and $400. Expect to pay between $70 and $250 for a backwater or check valve, including install. A single valve is easier to install than a comprehensive double-valve preventer system.

Does a well pump have a built-in check valve?

Many well pumps have built-in check valves. Even if a pump does have a built-in check valve, we recommend that a check valve be installed in the discharge line within 25 feet of the pump and below the draw down level of the water supply. The check valves pressure rating must exceed the maximum pressure of the pump.

What happens when check valve fails?

For example, failing check valves will start to vibrate and even lose some internal parts when problems begin to arise. Other symptoms of check valve failure include reverse flow and excessive component wear and damage. Check valves will also emit noises as they start to break down.

How do I know if I have a bad check valve?

Symptoms of a Failing Check Valve For example, failing check valves will start to vibrate and even lose some internal parts when problems begin to arise. Other symptoms of check valve failure include reverse flow and excessive component wear and damage. Check valves will also emit noises as they start to break down.

How do I know if I have a check valve?

How do I know if my well pump valve is bad?

Usually when a check valve fails the water will run backwards after the pump shuts off, and the pump will start again even when no one is using water. But if you have two or more check valves, the lower one can be masking the problem of a bad upper check.

How can you tell if your well pump is going bad?

Some of the most common indicators of a faulty well pump and pressure tank include:

Fluctuations in water pressure throughout the home.
Strange noises or rapid clicking sounds coming from the tank.
Spitting faucets.
Scalding shower water.
High electric bills.

What does a water well check valve do?

Do you need a double check valve for a water pump?

Needs the right air relief valve to keep the air out of the house plumbing when the pump starts up. If you have iron in your water, expect some precipitation. It might also be that adding a water hammer arrestor that uses a bladder would make double check valves OK. Less re-pumping of water than drainback.

What happens when a check valve is not working?

If the check valves are holding you should get water instantly when the pump starts. Also when the checks are not working it takes some time for the pump to refill the lines before any water gets to the cistern. So you are losing much of the water in the well just to fill the pipes each time the pump starts.

Where is the check valve on a pump?

For those that don’t, pump installers usually install a check valve in the well, immediately above the submersible pump. Some installers, but not all, also install an indoor check valve near the pressure tank.