Best Check Valve for Sump Pump: 9 of the Best Models

best check valve for sump pump

Various brands are producing the check valve because of its benefits. This makes it essential to find the best check valve for sump pump. The one you should choose should match your budget and have more features.

Sump pumps work with check valves that allow water to flow only in one direction, and this is why the water from deep in the pool is pushed out without it flowing back in. Therefore, the pump is a vital component of running a pool’s circulation system, especially true when draining out the water to clean it or to maintain it. You might have problems with your sump pump if you do not have a suitable sump pump check valve.

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Basics of Sump Pump Check Valve

It is essential that you have a sump pump installed if you want to prevent water from flooding your basement or crawl space. These systems collect water from the lowest points and pump it into the sewer or out into the yard. But what prevents the water from re-entering the basin once the water has been turned off? That is when the best sump pump valve comes into play.

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Sump pumps of the highest quality are surprisingly powerful for their size, yet this doesn’t keep water in drainage lines from flowing backward when the pump is turned off or when the power goes out. A check valve connects your drain lines to your pump and can prevent water damage and extend the life of the pump.

A sump pump check valve keeps water from entering the sump pump from the outside. Usually, after operating a sump pump and removing excess water, the user will turn off the pump after a certain period of time. As a result of the backflow and heavy pressure, water may be coming back. Water passes through the check valve in one direction only. When the valve closes, the path is blocked, and the basin stays dry.


The following are the steps to install a sump pump check valve:

  • Make sure that you have a suitable and compatible valve in the right size (1-1/4 or 1-1/2), with the correct coupling (slip or threaded).
  • If you are unsure about which type of check valve to pick, it is recommended to take a sample of the pipe to the hardware store so you can experiment with them. That way, you can buy the correct check valve.   
  • Before beginning the installation, make sure that all the tools are available after you have purchased the check valve. In the bare minimum, you will need a tape measure, a pipe cutter, a pipe cleaner, a utility knife, and PVC cement or glue, as well as a glue applicator.
  • Be careful not to wet yourself or your tools during installation by turning off the sump pump before starting.
  • Locate the discharge pipe and determine where the valve should be installed after turning off the pump. This should usually be installed in close proximity to the pump so that once it is turned off, there isn’t much water trapped between the two.
  • Once you have established the best position for the check valve, you should cut the pipe at the same long-distance as the check valve to make sure the valve fits perfectly.
  • Pipe cleaners can be used to clean the pipe’s edges once it has been filed. Next, place the valve into the discharge pipe, ensuring it fits properly. Check that it fits perfectly on both ends, so remove the valve. Then, apply glue or PVC cement with the applicator to the discharge pipe, then fit the valve back in and let it set.
  • Once the cement has dried, run the pump to test the valve. Check for leaks, then turn off the pump and verify that the water isn’t flowing back.
best check valve for sump pump
Check valve installation for a sump system (Reference:

Check Valve for Sump Pump Buying Guide

It can be confusing when it comes to plumbing equipment, especially when there are additional valves. Check valves are recommended for everyone’s system so that water doesn’t flow back into their sump pit when the pump is turned off. The purchase of an extra valve might seem unnecessary, but a few extra dollars can save the life of your pump.

You may have difficulty finding the best check valve. You should do much research before purchasing. Don’t forget to do your research, or you may wind up having to shop for a new valve and trying to dry out your basement! Read our in-depth buyers guide to find the best fitting check valve to replace your old one. 

Discharge Size

Drainage lines and sump pumps are not all the same size. For the right discharge pipe size, check your pump’s owner’s manual and measure your drain lines. Choosing the wrong valve will result in you not being able to connect the valve to the pump or the lines and in having to buy another. Be sure to do your research before you buy. There are people who will try to attach the wrong size with stainless steel clamps, but this “quick fix” leaves your basement vulnerable to flooding.

PSI and Head Height 

Choosing a new check valve requires consideration of PSI and head height. Each home and sump pump has its own flow rate. Your check valve may leak if the pump is too powerful.

Ensure you know what your head height is as well as how far the pump is from the end of your lines to ensure you don’t overpower or underpower your system.


Sump pumps must have a check valve that can withstand heavy loads and high pressure. A durable valve is therefore necessary. The product can be made durable by using durable materials. Usually, ABS plastic and metal, such as brass or stainless steel, are used to construct the valves. It’s hard to tell which is better; metal lasts longer, plastic is easier to install. Also, keep in mind that metals like brass and copper are more prone to corrosion than plastics. 

Check valve bodies made of PVC plastic or ABS are known for being durable and long-lasting. Check if the clamps on the valve are stainless steel, if there are any. Also, find out how much pressure it can withstand.


Check valves are fundamentally the same, even though their styles may vary. In some cases, check valves are designed to attach to a sump pump via a threaded connection, and others are specifically designed for slip-x-slip connections. Be sure to check the style of the check valve that matches the sump pump you currently use before ordering one. However, threaded styles are more suitable for metal piping, such as galvanized iron or steel pipes.

Proper Sizing

Each sump pump valve has a different diameter. So, find out the diameter of the pipe that fits inside the sump pump before you look for a new check valve. Choose a check valve that matches that diameter. However, most sump pump pipes are 1.5 inches in diameter. Choose the right check valve to match the size.

Noise Reduction

When the sump pump is working, some check valves can make a lot of noise. The noise can be highly annoying. Choosing a check valve with less noise will make you more comfortable.

Best Check Valve for Sump Pump Reviews

Having so many different brands of sump pump check valves could easily make you confused. This process requires thorough research. We’ve listed below the top options.

1. Zoeller 30-0181 PVC Check Valve 

best check valve for sump pump
Zoeller 30-0181 PVC Check Valve (Reference:

Pros & Cons

  • Pumps at 4.3 PSI,
  • Cost-effective for any household,
  • Easily installed above discharge,
  • More reliable than older mechanical check valves.
  • Many years of PVC construction are guaranteed – but not forever


Material Plastic and metal
Dimensions 9.75 x 17.5 x 6.75 inches
Weight ‎0.01 ounce
Installation Horizontal or vertical
Connection type 1-1/2 Slip X Slip unions

The Zoeller 30-0181 is the best-rated check valve for most homeowners among all the top-rated ones. Plastic and PVC make up this model – but don’t be scared away by the build material.

Featuring 1-1/2 inch slip unions and a flapper bends over to accommodate edges of all shapes and sizes. While pushing water up to 10 feet head height, the PVC and plastic body can withstand pressures of 4.3 PSI. It can also withstand temperatures up to 130 degrees Fahrenheit.

2. Superior Pump 99555 Universal Check Valve

best check valve for sump pump
Superior Pump 99555 Universal Check Valve (Reference:

Pros & Cons

  • Easy installation on most drain lines,
  • Eliminates water backflow after the pump has been turned off,
  • Made from solid ABS plastic,
  • Includes two adapters.
  • Despite construction durability, it won’t last forever


Material ABS plastic
Dimensions 2.75 x 2.75 x 7 inches
Weight ‎7.4 ounces
Warranty 1 year
Color Negro
Input connection type National Pipe Tapered
Outlet connection type MNPT


The Superior Pump 99555 is suited to most sump pumps and does not sacrifice quality. As a top choice for sump pumps that need to remove water from deep basements, this model has a high head height. You can attach this check valve to almost anything that has an NPT male and female thread of 1-1/4″ or 1-1/2″ connections.

The ABS plastic body has a Nitril-Bruna N Seal inside to prevent water from flooding back into the pit. It can handle pressures up to 11 PSI, but if the distance to your drain is long, you may need to hook up multiple check valves and hoses. Installing the valve is easy, and it fits most residential sump systems; just be careful not to overtighten.

3. Campbell B00JFF205Y

best check valve for sump pump
Campbell Brady MfrPartNo 0823-15C (Reference:

Pros & Cons

  • A nearly impossible noise to hear,
  • A long-lasting body,
  • Compatible with most pumps and drainage lines,
  • Suitable for horizontal or vertical installation.
  • For weaker pumps, the interior spring may be too strong.


Material Metal
Dimensions ‎3.3 x 3.3 x 9.5 inches
Weight ‎1 pounds
Color White
Connection Slip x Slip
Installation In horizontal or vertical lines


Those seeking a silent check valve will appreciate the Campbell B00JFF205Y. This check valve is also very affordable. This valve features Slip x Slip connections. With a high-pressure sump pump – 150 PSI – and a maximum temperature of 120 degrees, it can pump about 100 gallons per minute.

There aren’t many totally silent check valves, but if your pump is near your bedroom, you cannot live without one. When you live in an area prone to flooding, then this Campbell valve is almost completely silent, so you won’t hear constant clicking when it’s on and off.

4. Jackel Sump Check Valve 

best check valve for sump pump
Jackel Sump Check Valve (Reference:

Pros & Cons

  • Made of ABS plastic, it is strong and durable,
  • Long-lasting flapper,
  • High-quality stainless steel connectors provide a tight grip.
  • Don’t over tighten or use a pump with too much pressure.


Material Plastic
Dimensions ‎7.91 x 2.95 x 2.95 inches
Weight ‎9.6 ounces
Connection NPT


When buying a sump check valve for your home, Jackel Sump Check Valve is a good choice if you are on a tight budget. The flapper on this valve is one of the most durable on the market, so that it can be used with the majority of vertical sump pumps. ABS plastic makes up its body, which is attached to the pump and drain lines with steel clamps and fasteners.

Despite its small size, this valve can make a significant impact on water backflow. Its heavy-duty rubber interior makes it easy to install as well as leak-free when connected to NPT outlets, city sewer lines, and most other drainage lines.

5. AY McDonald 4424-100 2069C

best check valve for sump pump
AY McDonald 4424-100 2069C (Reference:

Pros & Cons

  • Quiet design to prevent noise caused by water hammering,
  • valve sealing tested at high pressure,
  • durable one-piece plastic construction,
  • Tight-fitting stainless steel clamps over 1.5-inch pipe connections.
  • Expensive


Material ‎Plastic
Dimensions 3 x 3 x 11.4 inches
Weight ‎13.1 ounces
Size 1-½ inches


With its extremely quiet design, AY McDonald’s 4424-100 is made to eliminate water hammer, which usually occurs once the pumping cycle has finished. Apart from that, the valve closing mechanisms inside of the valve are tested for leaks under pressure, which means that it is reliable.

The body of this product is made entirely from plastic, with a one-piece housing that eliminates the need for gaskets that could fail over time. The unit features 1.5-inch female sockets that can be easily mounted over PVC, steel, or copper pipes of similar size, and each socket has a stainless steel clamp that assists with tightening the joint.

The only issue is that this valve is extremely pricey.

6. Little Giant 599059

best check valve for sump pump
Little giant 599059 (Reference:

Pros & Cons

  • Slides over existing ABS, PVC, and copper pipes,
  • One-way valve prolongs pump life,
  • Flapper easily fits any drain system.
  • It will not work unless you install it in the right direction


Material Plastic
Dimensions ‎8.7 x 6.3 x 4.2 inches
Weight ‎10.1 ounces
Color Black
Installation In horizontal or vertical lines


Made of ABS plastic, the Little Giant 599059 has a one-way flapper valve to prevent backflow in horizontal lines. Getting the valves installed is simple; just slide them over the pump and drain lines.

Little Giant is known for its high-quality plumbing products, and this check valve is ideal for homeowners with horizontal lines. Your system will be protected from the backflow that can damage a pump once it is turned off.

7. Wayne Pumps 66005 

best check valve for sump pump
Wayne Pumps 66005 (Reference:

Pros & Cons

  • Works with most sump systems,
  • Stops stagnant backflow of water into the pit,
  • The rubber boot can be easily attached to any size piping.
  • The valve is less strong than other valves.


Material PVC
Dimensions ‎3 x 3 x 8.5 inches
Weight 4 ounces
Warranty 90 Day Manufacturer
Color black


We recommend the Wayne Pumps 66005 if you are uncertain about the size of the check valve you require and cannot measure it. It is designed to work with all types of pumps and comes with threaded male end 1-1/2 inches adapters, outflow shoulder 1-1/4 inches adapters, and 1-1/2 inch shoulder end adapters that attach the valve to the pump and drain lines.

Even though the valve may not seem like much, once the pump is turned off, it can prevent water from returning to the pump pit. The backflow of water causes permanent damage to a pump and leaves water in the basin. Having so many adapters available, it is easy to choose the right size for your pipes and to attach the connectors and clamps.

8. Zoeller 30-0043 

best check valve for sump pump
Zoeller 30-0043 (Reference:

Pros & Cons

  • Water hammer is eliminated,
  • quiets down noisy pumps in the basement,
  • Adds no additional strain to the sump pump.
  • Weak pumps may not be able to handle 1/2 lb spring


Material PVC
Dimensions 1 x 1 x 1 inch
Weight 6 pounds
Color White
Installation In horizontal or vertical lines
Input connection type Compression


In order to handle a sump pump that runs more than 100 times per hour, a check valve with two ports is essential. The Zoeller 30-0043 is just such a valve. Weighing about 6 pounds and capable of handling up to 50 PSI, it is ideally suited for powerful pump systems that create a lot of noise.

The noisy water hammering is one of the most common problems owners of check valves report. By using a 1/2 lb inner spring, this problem is resolved while still allowing water to flow only out. Furthermore, it prevents the pipes from shaking, thereby preventing plumbing noise in powerful systems.

9. Smith-Cooper International CV30L

best check valve for sump pump
Smith-Cooper International CV30L (Reference:

Pros & Cons

  • High flood areas can be handled with a tough design,
  • Water cannot be returned to the pit due to the spring-loaded ball cone design as well as the disc and hinge.
  • Corrosion-prone compared to ABS models


Material Metal
Dimensions 2.9 x 1.6 x 1.5 inches
Weight 0.01 Ounces
Input connection type National Pipe Tapered
Outlet connection type FNPT


Occasionally, systems require valves that can withstand more than 100 PSI made of something stronger than ABS plastic. Our recommendation for this situation would be the Smith-Cooper International CV30L. With a corrosion-resistant brass construction and stainless steel spring and poppet, this valve can handle high PSI.

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