Best Sump Pump Check Valves

Last Updated on by Anthony Brown

A sump pump is a “must have” piece of equipment for keeping your basement or crawl space dry. They work by collecting water from the lowest points and pumping into your sewer connection or out into your yard. But how do they prevent the water from flowing back into the basin once the water turns off – that is where the best sump pump valve comes in!

Top of the line sump pumps are surprisingly powerful for their size – but all that power can’t prevent water in the drainage lines from flowing backwards once the pump has been turned off or the power goes out. A check valve is attached to your drain lines and the pump and can extend the life of your pump and prevent water damage.

There are a few styles of check valves from name brand manufacturers like Zoeller and Superior Pumps – lets take a look and review some of the most popular valves. We reviewed dozens of valves to find which were the best. We checked compatibility, discharge size, build material and PSI to find the best for your home.

Top Pick

Zoeller 30-0181

For a check valve that works with almost any 1-1/2 Inch pump we recommend the Zoeller 30-0181

Top 8 Sump Pump Check Valves

Top PicksValveRating
Top PickZoeller 30-01814.5
Runner UpSuperior Pump 995554
Budget PickJackel Sump Check Valve​4.4
Horizontal Check ValveLittle Giant 599059​4.7
Quietest Check ValveCampbell B00JFF205Y​ 4.8
One Size Fits AllWayne Pumps 66005​4.3
2 Port ValveZoeller 30-0043​5
Brass Check ValveSmith-Cooper International CV30L​4.3

Top Pick: Zoeller 30-0181 PVC Check Valve

After researching and comparing all the top rated check valves we decided the Zoeller 30-0181 is the best for most home owners. It is made of PVC and plastic – but don’t let the build material scare you away.

It is built with 1-1/2″ slip unions and the flapper bends over to take care of the edge. The PVC and plastic body can withstand 4.3 PSI while pushing water up to 10′ head height while withstanding temperatures up to 130°F.

Valve Features

  • Works with horizontal and vertical lines
  • Stop water hammering
  • 1 1/2″ Slip x slip unions
  •  Weighs 12 ounces

Pros

  • Pumps at 4.3 PSI
  • Affordable on any home budget
  • Easy to install above discharge system
  • More reliable that old mechanical check valves

Cons

  • PVC construction will last for many years - but not forever

Runner Up: Superior Pump 99555 Universal Check Valve

Superior Pump 99555

Works with high PSI systems and fits both male or female threads and seals with nitril-bruna N seal

A valve that also fits with most sump pumps without sacrificing quality is the Superior Pump 99555. It is our top pick for sump pumps that need to pump water out of deep basements with a high head height. This check valve works with almost piece of plumbing you might want to attach it to and has both NPT male and female thread 1 1/4″ or 1 1/2″ connections.

The body is made of ABS plastic and the interior has a one Nitril-Bruna N Seal to keep water from flooding back into your pit. way can handle water pressure up to 11 PSI, if you have a long way to your drain you might need to hook multiple hoses and check valves together. Installation is easy and the valve is engineered to fit most residential sump systems, just make sure not to over tighten.

Valve Features

  • Fits 1 1/4″ or 1 1/2″ NPT lines
  • Attaches to ABS or PVC
  • Max 11 psi
  • Made of ABS plastic
  •  Weighs 6.5 ounces

Pros

  • Easy to install on most drain lines
  • Prevents water backflow after pump turns off
  • Manufactured out of solid ABS plastic
  • Comes with two adapters

Cons

  • PVC construction will last for many years - but not forever

Budget Pick: Jackel Sump Check Valve

Jackel Check Valve

Fits 1-1/4″, 1-1/2″ or Schedule 40 pipes and is a great choice for homeowners looking to save some money

If you are a homeowner on a budget and need to make every penny count when buying a check valve we recommend the Jackel Sump Check Valve. This valve works with most vertical sump pumps and has one of the most durable flappers on the market. The body is made of ABS plastic and it attaches to the pump and drains lines with steel clamps and fastener screws.

This check valve may seem small but it can make a big difference when it comes to water back flow. The heavy duty rubber interior allows easy to install plus leak free connections to NPT outlets, city sewer lines as well as most other drainage lines.

Valve Features

  • Drains to 1 1/4″ and 1 1/2″ NPT lines
  • Made of stainless steel and ABS plastic
  • Model has been in service for almost 50 years
  • Weighs 9.6 ounces

Pros

  • Made of super strong ABS plastic
  • Long lasting flapper
  • High quality, stainless steel connectors offer a tight grip.

Cons

  • Don't over tighten or use a pump with too high PSI

Horizontal Check Valve: Little Giant 599059

Little Giant 599059

A easy to install check valve that works with horizontal sump pumps

The Little Giant 599059 is made of ABS plastic and features a one way flapper valve to prevent water back flow in horizontal lines. The valve weights about 10 ounces and measures 8.7 x 6.3 x 4.2 inches. Installation is easy, all you need to do is slide the valves over the pump and drain lines.

Little Giant is known for high quality plumbing equipment and this check valve is a great choice for any homeowner with horizontal lines. It will protect your system from back flow that can destroy a pump once it turns off.

Valve Features

  • Attaches to 1 1/4″ and 1 1/2″ ABS, PVC, or copper piping
  • Works with horizontal and vertical lines
  • Easy to install with slip fit design
  • Stops water and gas back flow
  • Weighs about 10 ounces

Pros

  • Slides over existing ABS, PVC, or copper pipe
  • One way valve extends pump life
  • Flapper works in any drain system

Cons

  • Make sure you install the right direction or it won't work

Quietest Check Valve: Campbell B00JFF205Y

Campbell B00JFF205Y

Never hear your system clicking on or off with a check valve that is almost 100% silent

The Campbell B00JFF205Y is the ideal check valve for home owners looking for a silent valve. Costing about $20 it is also affordable on any budget. This valve is made of clear PVC and features Slip x Slip connections. It can work with high pressure sump pumps – up to 150 PSI – about 100 gallons per minute – and a max water temperature of 120 degrees.

Finding a totally silent sump pump check valve is hard, but if your pump is located near a bedroom it is something you can’t live without. This Campbell valve is almost 100% silent which means you won’t hear a constant clicking on and off if you live in an area prone to flooding.

Valve Features

  • Almost totally silent
  • Works on lines up to 150 PSI
  • Can be installed horizontally or vertically
  • Weighs 1 pound

Pros

  • Almost impossible to hear
  • ABS plastic body gives valve a long working life
  • Designed to fit most pumps and drainage lines
  • Can be installed horizontally or vertically

Cons

  • Interior spring can be too strong for weaker pumps

One Size Fits All: Wayne Pumps 66005

Wayne Pumps 66005

For a valve that will fit any system try the Wayne Pumps 66005​

Not sure exactly what size check valve you need and can’t measure – then we recommend the Wayne Pumps 66005. This valve was designed to use with all types of pumps and has threaded male end 1 1/2″ adapters, outflow shoulder end 1 1/4″ adapters, and includes 1 1/2″ shoulder end adapters to attach to your pump and drain lines.

The valve may not look like much but it can prevent water from returning to your pump pit once the pump turns off. Water back flow can permanently damage a pump and leave water remaining in the basin. With so many adapters it is easy to pick the right size for your pipes and attaches the connector and clamps.

Valve Features

  • Made of PVC
  • Attaches to 1 1/4″ and 1 1/2″ lines
  • Only allows water to flow one direction
  • Weighs 4 ounces

Pros

  • Fits almost any sump system
  • Prevents stagnate back flow water from entering the pit
  • Rubber boot is easy to attach to any size piping

Cons

  • Not as strong as other valves

2 Port Valve: Zoeller 30-0043

Zoeller 30-0043

2 Port check valves like the Zoeller 30 makes less noise than traditional valves and can handle more PSI

If you are looking for a 2 port check valve that can handle sump pumps that turn on more than 100 times per hour without making any noise or letting in any back flow the Zoeller 30-0043 is a great option. It weighs about 6 pounds and can handle up to 50 PSI which makes it a good choice for powerful pump systems that tend to make a lot of noise.

One of the primary problems check valve owners report is noisy water hammering. The 1/2 lb inner spring eliminates this problem while still allowing water to only flow “out”. The check valve also prevents pipe shaking and other plumbing noises in powerful systems.

Valve Features

  • Powered by 1/2 pound spring
  • Reduces noise from water hammering
  • Anti clog design
  • Stops pipes from shaking
  • Can be installed horizontally and vertically

Pros

  • Eliminates water hammering
  • Stops noisy pumps from making too much noise in the basement
  • Does not add additional strain onto the sump pump

Cons

  • 1/2 lb spring may be too strong for weak pumps

Brass Check Valve: Smith-Cooper International CV30L

Smith Cooper CV30L

A brass check valve that is corrosion resistant and can handle up to 200 PSI

Some systems need a valve made of something stronger than ABS plastic that can handle more than 100 PSI. If this sounds like your home we recommend the Smith-Cooper International CV30L. Thanks to the high quality corrosion resistant brass construction this valve can handle high PSI using a stainless steel spring and poppet.

Valve Features

  • Made of brass for extra strength
  • Max pressure of 200 PSI
  • Max temperature of 350 fahrenheit
  • NPT female connector
  • Can be installed horizontally or vertically
  • Weighs 1 pound

Pros

  • Tough design able to handle high flood areas
  • Uses spring loaded, ball cone design plus disc and hinge to prevent water from flow back into the pit

Cons

  • More likely to corrode than ABS models

Who Needs a Sump Pump Check Valve

Plumbing equipment can be confusing, especially additional valves. We recommend everyone install a check valve on their system to prevent water from flowing back into their sump pit once the pump turns off.

It might seems silly to invest in an extra valve but a few extra bucks can save the life if your pump.

Buyers Guide

Still not sure if any of these check valves are right for your home – check out our in depth buyers guide. We reviewed all of the most important factors to consider before making your final decision. Remember to do your research or you might find yourself shopping for a new valve and trying dry your basement!

Discharge Size

Not all sump pumps and drainage lines are the same size. Make sure to measure your drain lines and check your pumps owners manual to find the right size. Buying the wrong size valve means you won’t be able to attach it to the pump or the lines and will have to buy another so make sure to do your research ahead of time.

Build Material

The two most common build materials are ABS plastic and metal, usually brass or stainless steel. Both are good options, metal tends to last longer but is harder to install than a plastic valve. Another factor to keep in mind is that brass and other metals are more prone to corrosion that plastic models.

PSI and Head Height

PSI and head height are two of the most important things to consider when shopping for a new check valve. Different homes and sump pumps pump water at different rates. If your pump is too powerful for your check valve it may cause a leak.

Always make sure to know your head height as well as the distance from the pump to the end of your lines so you do not over or under power your system.

Frequently Asked Questions

Does a sump pump need a check valve?
Yes. A check valve prevents water from flowing back into your pit once the pump turns off.

Can a sump pump check valve be installed horizontally?
Check valves can be installed horizontally and vertically. If they are going to drain solids they must be installed horizontally or less than a 45° angle.