Check Valve Installation Position

March 20, 2024 Post a Comment

Check valve installation position

Check valve can be installed in horizontal or vertical piping runs, with the flow running upward. Mounting for vertical installations is critical.

Does a check valve go before or after a valve?

“Generally, both a check valve and a gate valve are installed in the discharge line. The check valve is placed between the pump and the gate valve and protects the pump against reverse flow in the event of unexpected driver failure.”

Which way should a check valve face?

The end of the check valve with the flapper (which looks like a colored or horizontal bar) should be facing the air pump. If you install the check valve backwards, no air will flow when you turn on the air pump, so just flip the check valve around.

Do check valves go before or after a pump?

Check valves also protect the pumps from harm or leakage, so it makes for good practice to install check valves after the pump to prevent any backflow.

How far from pump should check valve be?

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.

How far does the check valve need to be from the pump?

Typically, the pump has a check valve installed within its body and the next check valve in line should be no further than 25 feet from the pump. If a check valve is not installed in the pump's body, though, the first check valve should be installed at the pump's discharge head.

What happens if you install a check valve backwards?

Installation orientation If there isn't an arrow, examine the valve to ensure it is installed in the intended flow direction. If the valve is installed backward, media will not be able to move through the system, and the resulting pressure build-up can cause damage.

How far from sump pump should check valve be?

The most suitable location for a sump pump check valve is between 8" up from the pumps discharge to approximately 12" above floor level. Installation above the floor level is convenient for easy inspection, servicing, or replacement of the valve.

What is the primary concern when installing a check valve?

Mistakes in installation can manifest in valve leakage or failure, compromising the integrity of the entire piping system. Swing check valves, double-door check valve, or silent spring-assisted axial flow check valves, all control flow through a slightly different mechanism.

Should check valve be horizontal or vertical?

When installing a check valve, a horizontal line is always preferred, because it takes gravity out of the equation.

Which way does the arrow on a check valve go?

The check valve should point in the direction of the gas flow. Using your reference points, you want the check valve arrow to be pointing "up."

Can a swing check valve be installed in any position?

Swing check valves can be mounted in either vertical or horizontal position with upward flow or in any intermediate position. Flow must be by direction of arrow in body.

Can you put a check valve on the suction side of a pump?

A check valve may be installed on the suction side of the pump to maintain the pump's prime in the event of a pump shutdown. A check valve will be used commonly on the discharge of the pump to prevent backflow from the downstream system, when the pump shuts off.

Where should a check valve be installed on a sump pump?

Sump pump check valves should be installed close to the floor after the pump, as shown by arrow #1. This will reduce the amount of water that drains back to the pump after each cycle.

Does check valve reduce water pressure?

Check valves do not reduce pressure, they actually help maintain it. In the setup you describe, it might work. However you will DEFINITELY need another check valve on the outlet of the tank to prevent the high pressure flow from backwashing in through the bottom, since there is no shuttoff/float valve there.

Which comes first gate valve or check valve?

In order to facilitate repair and prevent the shutdown of the whole system due to the failure of the check valve, the check valve will be installed before the outlet gate valve or butterfly valve.

Is it OK to have 2 check valves on a sump pump?

So with two check valves in parallel, you protect against the stuck-closed scenario (as it is unlikely that both check valves will fail in the same manner), but are actually more likely to have a stuck-open fault, since if either check valve fails open the discharge water can flow back into the sump well.

Why check valve is required at pump discharge?

With water hammer, there is a need of fast-closing check valve to prevent pressure surges and the resulting shock waves that occur when the disc slams into the seat, sending noise, vibration, and hammering sounds that can rupture pipelines and damage equipment and pipe supports.

How many check valves do you need?

The check valve will help your water system maintain pressure when the pump shuts off and also prevent backspin, upthrust, and water hammer. It is recommended that at least one check be installed in all submersible well pump installations.

Is it necessary to install a check valve?

Check valves are necessary if there is a risk of condensate backflow. For example, when a trap discharges into a common condensate collection line, there is the potential risk of backflow from condensate discharged from other traps, so as a rule a check valve should be installed.