Brass Check Valve For Well Pump

In this blog post, you’ll read:Knowing what brass check valves are and how they work is vital before getting deeper into the well pump brass check valve. These are the most simple turning check valves. The primary purpose is to let singly. Also, to avoid the flow from going in a reverse way. When media runs from it, the check valve opens. Yet, when media ceases to flow, it shuts down.
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Brass Check Valves and their function:

Firstly, knowing what brass check valves are and how they work is vital before getting deeper into the well pump brass check valve. These are the most simple turning check valves. The primary purpose is to let singly. Also, to avoid the flow from going in a reverse way. When media runs from it, the check valve opens. Yet, when media ceases to flow, it shuts down.

swing check valve
Swing check valve

Brass well pumps check valves:

When the pump works, the pressure of the water flows into a valve, causing it to open. The backflow pressure and spring merge to shut down the valve immediately when the pump shuts off. This quick closure is vital for lessening the water hammer in the system. Swing check valves are unsuitable for well pump working because they close too gradually.

The vital part of the water pumping system is a check valve, which enables high consistency and enactment. When it is shut off, it doesn’t cooperate by aiding in preserving the pressure and safeguarding the pump’s life cycle. The check valve also avoids destruction from water hammer, up thrust, and backspin.

400 wog check valve
400 wog check valve

How do brass well-check valves work?

Brass check valves are self-activating devices. That means people do not need to participate in their closing and opening. Instead, the leading working is a pressure differential. Yet, many kinds of check valves are present in the market. In this check valve, fluid below pressure arrives in the inlet. This spontaneously opens the disk of the valve due to this pressure. Yet, it stays open till the pressure becomes low. The disk bangs shut and turns off the valves as the pressure falls.

The check valve’s cracking pressure is vital because the pressure causes the disk to open. I am yet allowing the fluid to flow through. Three psi to 350 psi is the cracking pressure, which depends on the use and size of a brass check valve.

Check valve works and types.

 Most used check valves:

Smaller pump check valves:

They are available in many designs, like physically activated ball valves or a spring ball valve that attributes a spring-loaded ball that closes the valves.

Duckbill check valves:

It shuts and opens with pressure by having a Rubber diaphragm.

Larger pump check valves:

A pivot on a hinge or metallic disk swing to close the valve to avoid liquids’ backflow.

Location of the brass check valve on the water well:

It should be placed on the top of the pump. This will keep the pump working very well. Yet, it contains the system’s head of water.

Testing a well pump brass check valve:

The pressure tank drops pressure when the pump is not working. This is the most common problem in well pump systems. This requires an extra amount of money when the pressure drops. Because the well pump cycles more often when pressure is lost, this pressure drip requires more power. That’s why it is vital to discover if a drippy check valve is a cause behind pressure loss.

To examine whether the brass check valve is functioning correctly, shut off the link between what is facilitated and the pressure tank. If there is still dripping pressure after an hour, this means the main reason something is on under the well side of the system. It must be a swap or fixed in many cases because the check valve is liable for this pressure. Yet, it is vital to examine extra. Pressure loss in the system may result from a suppressed pipe running from the well or cracking in the drop pipe.

Dimensions of brass check valve for pump:

MaterialsBronze, Lead-free brass
Size½ -4
Temperature-15C -115C
Thread connectionNPT
Working pressure200PSI
Non-return check valve specs

Importance of brass check valve well pump:

To stay in a working position, frequent activation is required. That means it is necessary to be capable of turning on and working when it’s not running. Most well pumps require water inside the piping and pump to function. Desperate of brass check valve, water may run out of the pump. Yet, it will not be capable of working when it is shut off. If the water quickly runs back into the well, not having a prepared pump is not the only worry. It defends pumps from upthrust, water hammer, and backspin.


The pump may revolve opposite when water quickly runs back into a well. The strength put on the motor to inverse the pump we can crack if the pump turns on in phase of back Spin.

 Water hammer:

A vacuum can be a reason for dripping in the pipe in the brass check valve due to atmospheric pressure being less than the pressure in the piping. Water will fill the place at incredible velocity when the pump turns on. A bisping motor or pipe can be destroyed due to hydraulic shock.


The pump initiates with zero head pressure if it does not have a brass check valve. From A to B  to stir the media, Head pressure is the extent of pressure required.

The impellers in the pump increase faintly and wear besides the diffusers, which reasonably leads to the non-performance of the motor and pump.


 Ductile Iron:

Rather than bronze check walls, ductile Iron check valves are a good and durable choice. These valves are a superb choice for deep wells that use many check valves in the piping.

ductile iron check valve
ductile iron check valve

Stainless steel:

 These are not susceptible to erosion or oxidation. If the well has steel piping, the stainless steel check valves may survive the piping.


A PVC check valve is less costly than a bronze check valve. It also has much chemical withstand with its surface. Yet, PVC does not work well under high – pressure or temperature and low manual power than bronze.


bronze check valve
Bronze check valve

Bronze check valves are rust-resistant but are not as durable as ductile Iron.

Maintaining a brass check valve for the well pump:

A brass Check valve doesn’t need much maintenance. For years, they can last. Yet, if dirt or external particles trap between the ball and the seat, they can develop leaks. It may cause the check valve to work not correctly.

  • Step 1: Keep it clean:

The area should be hygienic to avoid any destruction to brass check valves. You might require a towel to clean the dust if you can touch the valve. Always use a wire brush if dirt is deposited.

  • Step 2: Keep an eye out:

Frequent examinations of your equipment. It is also another straightforward tip. Before you conclude needing costly care, it’s an excellent way to mark potential issues.

  • Improving Your Well Pump’s Check Valve Expectancy:

Two-line or one-line jet pumps above ground can work for many years before they need to be replaced. As far as from 15 to 20 years. The succeeding factors may affect the predictable life of a well pump.

  • Duty cycle
  • Water sediment
  • Quality installation Safe yield
  • Motor size
  • Motor quality
  • Cavitation
Inline Spring Loaded Check Valve with a box 0614c
Inline Spring Loaded Check Valve with a box 0614c



Does a well pump need a brass check valve?

A Well pump requires foot valves that should sit inside the water in the well. Water from rolling back into the well also stops by the check valve. Since this preserves, the pump’s pressure tank is pressurized and aware.

How many brass check valves are in the well water system?

When fixing a well pump, it is suggested to examine one brass valve. The pump’s release system must be set with a  line brass check valve if no brass check valve is fitted. It must fix the discharge pump system 25 feet from the pump’s release valve at the drawing extent.

How many brass check valves do you need on a well?

You can sustain pressure in your water system when your pump shuts off. Stop it from sticking the floor bouncy forth and back.

What does a brass check valve do for a water well?

Brass check valves are fixed to pumps that are shut off. You can sustain the volume of water in the system. The pumps are also free from water hammer, upthrust, shock, and backspin. Suppose these three situations are not there. There are dangers related to a motor or pump failure, reduced facility, or other faults caused by their merged effect.

Bronze swing check valve drawing and spare parts
Bronze swing check valve drawing and spare parts

Should a brass check valve be fit before or after a pump?

This is frequently a pump problem. When mandatory shutdown of a vacuum pump is done, it may be beneficial to fix a brass check valve on its suction side when the downstream pump is shut down. Or, when the pump stops, a brass check valve can be utilized to avoid backflow to the downstream system.

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