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The quiet check valve is really quiet. The spring-loaded internal flapper silences sump pump check valve noise.

Learn how the quiet check valve works. Understand how the loud noise happens, how the design makes a difference in the noise level, how to install them, and what other consumers say about the quiet check valves for sump pumps.

Be an educated shopper. Know the difference between brands and their features, Learn before you buy so you purchase the best check-valve for your situation.

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(Select specific topic for quiet check valve for sump pump. Learn about quiet check valve. They are silent. Compare quiet to traditional. Shop check-valves.)

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Why Does A Check Valve Make A Loud Noise?

Check-valve installed with sump pump system

The force of water flowing backward through the discharge pipe when the sump pump shuts off causes a loud clunking thudding noise as the water hits the check-valve. Eliminating the check-valve is not the solution.

A check valve is placed in line with the PVC discharge piping connected to the sump pump discharge port to prevent water remaining in the discharge pipe to flow back down the pipe through the pump and back into the pit when the pump motor turns off.

The check-valve prevents the sump pump from pumping the same water over and over and prevents unnecessary wear and tear on the pump.

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Why Install A Quiet Check Valve?

The quiet check valve is really quiet. The spring-loaded internal flapper silences pump check valve noise.
 
By installing a quiet check valve there will be no need to ask why there is such a loud sound when your sump pump shuts off. There will no longer be a loud clunking thudding sound. The quiet check valve will ensure quiet operation greatly reducing the noise level in your finished basement and on the first floor.
 
Surprisingly, your pump runs quietly; the noise you hear is the check-valve. Discover more about how the quiet check valve works and hear on the video below how much of a difference a quiet-check-valve makes.
 
 
 

How Does The Design Make A Difference In The Noise Level?

Sump-pump-check-valve design comparison

The sump pump motor and impeller give velocity to the water as it moves upward. The check valve gate opens upward as the water comes through. The profile of the gate makes a difference in how the liquid flows through.

The more specifically the gate is designed to give passage to the water and air without causing a change in its velocity, the smaller the amount of pressure loss. The lower the pressure loss, the quicker the gate moves back into closed position preventing air and water from going through the sides of the gate and causing water hammer.

The more precise the fitting of the gate to the wall of the inner chamber the better the seal and the lower the chances of water hammer.

By applying the explanation provided above, it becomes obvious there is a distinct difference between the hydrodynamic design of the Brady, Campbell, AY-McDonald and Zoeller check valve and the common hardware stocked check-valves.

In addition, when putting ones finger inside the inner chamber and feeling the movement of the gate, it becomes obvious that the spring gate of the Campbell check valve will close rapidly.

The noise level of a spring gate and a swing flapper can be compared to a screen door which does or does not have a compression arm that controls the doors closing.

Screen doors with a compression closing arm at the top do not bang shut. The arm controls how fast the door closes and prevents it from slamming shut.  In the same way the spring of a quiet check-valve controls the closing of the gate.

Screen doors without a compression closing arm at the top of the screen door bang shut because there is nothing to control the closing. The swing valve does not have a spring and therefore bangs shut when the pump shuts off and the remaining water in the pipe flows backwards down the discharge pipe towards the pump.

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How Does The Noise Of Sump Pump Check Valve Brands Compare?

Pump Check Valve Noise Comparison

The Campbell check-valve is most quiet. It has a highly defined hydrodynamic design and a ½ pound stainless steel spring for the spring gate.

The Brady model is also manufactured by Campbell. It has a highly defined hydrodynamic design; however the flap gate is hinged and does not have the strong steel spring.

Some Zoeller model-valves also have a hydrodynamic design. Customer reviews indicate the Brady and  some Zoeller models are as quiet as the Campbell.

The Basement Watchdog comes in third. It has an additional air chamber to absorb the noise.

The traditional flap Zoeller, Little Giant, Flotec and Wayne rank fourth. They work fine if you do not mind a noise every time the sump pump shuts off and a small amount of water running through the check-valve and back through the pump and into the sump basin.

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Is Quiet Pump Check Valve More Expensive?

The quiet pump check valve is not more expensive than other sump pump check valves.

The Campbell and Brady were very comparable in price at the time of this comparison. Campbell was $16.56 and Brady $17.55. Zoeller Quiet Model was around $24, The Basement Watchdog Klunkless was most expensive at $24.99. Wayne was cheapest at $9.61. Traditional flap Zoeller and Little Giant check valves were the same price $11.25. Flotec was $13.25.

Based on price comparison, Campbell and Brady are the best.
 
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Do Consumers Say Quiet Check Valves Are Really Quiet?

Read consumer reviews to see what they say

The Brady is quiet.    September 21, 2014
By James White, New Hampshire

My plumber put in a new sump pump. The new sump worked fine, but I began to notice after it finished its cycle there were two loud "clunks". I began to investigate and found the noise was due to the check valve closing and the pressure in there was making a "water hammer" clunk. I mentioned this to the plumber. He told me he put in a good quality check-valve, but I could tell he did not seem to know as much on this topic. So I did more research and found the Brady model, purchased it and asked him to install it for me. He seemed a little skeptical, but said he would try it. There is barely a sound now. I am so glad I found this.

Silence at last    August 1, 2014
By Cindy Johnson, New Jersey

Total silence. This has changed my life. To think I listened to the clunking thudding sound for over 20 years. Its so quiet I have to remember to check the sump pump system to make sure it is working. I do not hear a sound. I really think it is cool to see the gate work through the clear plastic. I love my Campbell check-valve.

This works.    July 31, 2014
By Jim Yates, Chicago, IL

I have a one horsepower pump. I was having trouble with all other manufacturer check-valves either blowing apart (rubber type) or failing prematurely. I was wondering if I would ever find a good check-valve. I found the Campbell. It works with my one horse power pump. I can see the internals to see if everything is working properly. There is no noise either. If you want a reliable quiet-check-valve look no further. I have bought 3 of these, one for each pump in my house, and will never turn back to any other type.

Why did I not know about this sooner.     July 15, 2015
By Judy, Illinois

The Ay McDonald silent valve has changed my life. Everything is so quiet in the house now. We live in a high water table so our pump runs every 15 minutes during dry days. I got so used to hearing the clunking sound but now I can't hear it upstairs any more. This is a great invention.

No more water hammer sounds.    April 22, 2015

For years I listened to the water hammer sound when our sump pump went off. I installed a Campbell silent valve 23 inches above the pump, and it solved my problem completely. No sound at all now! I have a 1 1/4 PVC so bought adapters to transitiion to the size of my 1 1/4 PVC since the ends are 1 1/2 inches. It was not that expensive either.

A quiet check-valve at last.    March 5, 2015
By Dale Johnson, Indiana

Our sump pump made such a noise when it shut off. I thought it was the pump. In talking to a plumber I learned it was the check-valve. I asked him what he would recommend. He suggested the Campbell quiet-valve. I found one at Amazon for a great price. I installed it myself. Not really hard to do. Now it is so quiet when the pump runs. This is a great product.

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Listen! Quiet Check Valve Is Quieter.

Listen for yourself. Can you hear the difference between a traditional and quiet-check-valve? The following video clearly demonstates the difference in noise level.

 
 
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How To Install A Quiet Check Valve.

Quiet Chk Valve for Sump Pump
Quiet check valves are easy to install. Here are the steps.
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Which Manufacturers Make The Quiet Check Valve?

The Quiet check valve, also known as the silent check-valve, is manufactured by MagicPlastics for Campell Mfg. and Brady Mfg, AY McDonald Mfg., Zoeller, Valterra, Spears, Pasco and Jim Murray, Inc. The most known manufacturer for the valve is MagicPlastics Campbell with a Number One Best Seller ranking on most online stores.

The most popular model of the Campbell is B-0823 which has a clear outside chamber wall so the operation of the check-valve can be monitored by the homeowner. It is fascinating to watch the gate (flapper) open and close. The valve is so quiet that many homeowners say they watch the flow of water through the chamber and the movement of the gate (flapper) to see if it is still operating. The Brady Model has a solid white chamber outer wall in case you do not wish to see the valve in operation.

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What Sizes Are The Quiet Check Valves?

One and One-Half Inch Diameter

The most popular size for the Quiet check valve is 1 1/2 inches (one and one-half inches). Both Campbell, Ay McDonald and Zoeller make the 1 1/2 inch model.

Two Inch Diameter

Fortunately the quiet check valve also comes with a diameter of 2 inches. It is nice to know that two inch diameter models are available because a homeowner with a 2 inch PVC disharge pipe is very likely to have a lot of water pumped from the sump pit during heavy rainstorms. Eliminating the loud slapping sound or water hammer would be very noticeable and make a very big difference. Both Campbell, Ay McDonald and Zoeller make the 2 inch model.

One and One-Fourth Inch Diameter

Only AY McDonald manufacturers the 1 1/4 inch valve.

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When Should An Old Quiet Check Valve Be Replaced?

Quiet check valves do not wear out quickly. If your sump pump does not run much you will probably never have to replace it.

With a clear valve body you will see when the spring flapper no longer keeps the water from running back down the discharge piping and into the pit. When the pump shuts off, listen for the sound of water flowing back into the pit. When this water situation occurs it is time to replace an old valve.

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    QUIET CHECK VALVE SHOP OPTIONS
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BEST RATED BEST SELLERS TOP EIGHT QUIET CHECK VALVES FOR SUMP PUMPS

Campbell 1.5 in Quiet B-0823-15 Sump-Pump Chk Valve
 

B-0823-15C

Quiet Campbell 1.5 in B-0823-15C

Brady Chk Valve 1-1/2 in Quiet B-0823-15 Sump Pump Quiet Chk Valve
 

B0823-15

Quiet Brady 1.5 in B-0823-15

AY McDonald 1.5 in Quiet 4424-100 2069C Sump-Pump Chk Valve
 

4424-100 2069C

Quiet AY McDonald 1.5 in 4424-100 2069C

 

 

Valterra Quiet Check-Valve 200-CU15 1.5 in Clear Solvent Weld
 

200-CU15

Quiet Valterra 1.5 in 200-CU15 Swing/Spring Combo

Quiet Campbell 2 in Quiet B-0823-20C Sump Pump Chk Valve
 

B-0823-20C-2

Campbell Mfg B-0823-20C-2 2 in Sewage/Sump

Brady Campbell 2 in Quiet B-0823-20C Sump-Pump-Check-Valve
 

B-0823-20C

Campbell B-0823-20C 2 In

 

Campbell 2 in White Quiet B-0823-20 Sump Pump Chk Valve
 

B-0823-20

Campbell B-0823-20 2 In White

Ay McDonald 2 in 2069 Series Sump-Pump-Check-Valve
 

2069 Series

Ay McDonald 2 in 2069 Series Sump Pump Check Valve

 

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QUICK SHOP QUIET CHECK VALVES FOR SUMP PUMPS

Zoeller Quiet Check-Valve 30-0041 1.5 in Clear Solvent Weld
 

30-0041

Zoeller 1.5 in Quiet 30-0041 clear 50 psi PVC 2-Port

Ay McDonald 4420-465 2069 Check-Valve-Quiet 1.5 in
 

4420-465 2069

Ay McDonald 4420-465 2069 1.5 in.

Ay McDonald 4424-111 2065 Check-Valve-Quiet 1.5 in.
 

4424-111 2065

Ay McDonald 4424-111 2065 2 in

 

Ay McDonald 4420-493 2069 Check-Valve-Quiet
 

4420-493 2069

Ay McDonald 4420-493 2069 1.25 in

Zoeller 30-0042 2 In White
 

30-0042

Zoeller 30-0042 2 In White

Zoeller 30-0043 2 In White
 

30-0043

Zoeller 30-0043 2 In Clear 2 Port

 

Valterra 200-CU15 1.5 In. Clear
 

200-CU15 SPRING

Valterra 200-CU15 1.5 In. Clear

Valterra 200-C15 1.5 In. Clear
 

200-CU15 SWING/SPRING

Valterra 200-C15 1.5 In. Clear Swing/Spring Combo

 

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BEST RATED BEST SELLERS TOP EIGHT TRADITIONAL CHECK VALVES FOR SUMP PUMPS

Zoeller 30-0181 1.5 in.
 

30-0181

Zoeller 30-0181 1.5 in.

Zoeller 30-0151 2 in.
 

30-0151

Zoeller 30-0151 2 in.

Zoeller 30-0021 1.5 in.
 

30-0021

Zoeller 30-0021 1.5 in.

 

Superior 99555 1.25 or 1.5 in.
 

99555

Superior 99555 1.25 or 1.5 in.

NDA Prinsco 2251 1.5 in.
 

2251

NDA Prinsco 2251 1.5 in.

Parts2O FP0026-10 1.25 or 1.5 in.
 

FP0026-10

Parts2O FP0026-10 1.25 or 1.5 in.

 

Wayne 66005-WYN 1.25 or 1.5 in.
 

66005-WYN

Wayne 66005-WYN 1.25 or 1.5 in.

Little Giant SCV114 1.25 in.
 

SCV114

Little Giant SCV114 1.25 in.

 

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