Plastic Check Valves

The plastic check valve is a device that helps ensure gas and fluid flow in the correct direction. It's most commonly used on pipelines, but can also be found in water systems, heating and cooling units, factories, oil refineries, chemical plants and more.

Top Products

Best Overall

Why We Like

  • Make sure this fits by entering your model number.
  • Will fit any 1-1/4-inch or 1-1/2-inch NPT male or female thread
  • Made from durable ABS plastic
  • High quality Nitril-Bruna N seal
  • Water pressure limit: Max 11 psi

Minor Problems

  • It may not fit all 1-1/4-Inch or 1-1/2-Inch MIP or FIP.
Editor's Choice

Why We Like

  • Keeps condensate from draining back into the system
  • Fits with Little Giant pumps
  • Designed for specific pump models

Minor Problems

  • It might not fit all types of tubing.
Best Value

Why We Like

  • 1-1/2 slip x slip unions
  • Flapper bends over a radius to eliminate sharp 90-degree edges
  • Capable of vertical or horizontal installation
  • Slip x slip for 4.3 PSI (10 feet of head) at 130°F
  • Designed to reduce water hammer

Minor Problems

  • It may not be tough enough.
1/25
Superior Pump 99555 Universal Check Valve, Plastic, Fits all 1-1/4-Inch or 1-1/2-Inch MIP or FIP
9.1
Based On 3279 Reviews
  • Easy to use
    9.9
  • Value for money
    9.3
  • Customer support
    8
  • Overall satisfaction
    9.1

Pros

  • Make sure this fits by entering your model number.
  • Will fit any 1-1/4-inch or 1-1/2-inch NPT male or female thread
  • Made from durable ABS plastic
  • High quality Nitril-Bruna N seal
  • Water pressure limit: Max 11 psi

Cons

  • It may not fit all 1-1/4-Inch or 1-1/2-Inch MIP or FIP.
2/25
Little Giant CV-10 Check Valve for VCC, VCM, VCMA and VCL-14/24, 1/4
9.6
Based On 2134 Reviews
  • Easy to use
    9.9
  • Value for money
    9.9
  • Customer support
    9
  • Overall satisfaction
    9.7

Pros

  • Keeps condensate from draining back into the system
  • Fits with Little Giant pumps
  • Designed for specific pump models

Cons

  • It might not fit all types of tubing.
3/25
Zoeller 30-0181 PVC Plastic Check Valve, 1-1/2 Inch

Zoeller 30-0181 PVC Plastic Check Valve, 1-1/2 Inch

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9.6
Based On 1987 Reviews
  • Easy to use
    9.9
  • Value for money
    9.9
  • Customer support
    9
  • Overall satisfaction
    9.7

Pros

  • 1-1/2 slip x slip unions
  • Flapper bends over a radius to eliminate sharp 90-degree edges
  • Capable of vertical or horizontal installation
  • Slip x slip for 4.3 PSI (10 feet of head) at 130°F
  • Designed to reduce water hammer

Cons

  • It may not be tough enough.
4/25
BBTUS Check Valve, 2Pcs 3/8
8.9
Based On 627 Reviews
  • Easy to use
    9.3
  • Value for money
    9.1
  • Customer support
    8
  • Overall satisfaction
    9.1

Pros

  • Material: ABS resin and silicon rubber
  • Performance: Normal performance under 25 ℃ to 60 ℃, Strong resistance to acid, alkali, salt corrosion ability
  • Application: Check valve is used in fluid system to prevent reverse flow fluid, or used in pneumatic system to prevent reverse flow of compressed air

Cons

  • The Check Valve might not stop the flow of water.
5/25
Quickun 1/2
8.9
Based On 381 Reviews
  • Easy to use
    9.0
  • Value for money
    9.7
  • Customer support
    8
  • Overall satisfaction
    8.9

Pros

  • Material: PVDF/Silicon Rubber
  • Barb Size: 1/2"
  • Performance: Normal under 25-60 ℃, Strong resistance to acid, alkali, salt corrosion ability
  • Application: Check valve is used in fluid system to prevent reverse flow fluid, or used in pneumatic system to prev

Cons

  • It might not be durable.
6/25
4 Packs Check Valve, 1/4 Inch 6mm PVDF Wear-Resistant One-Way Check Valve for Fuel Gas Liquid Air
9.1
Based On 275 Reviews
  • Easy to use
    9.5
  • Value for money
    9.5
  • Customer support
    8
  • Overall satisfaction
    9.3

Pros

  • Function: check valves for fluid systems and pneumatic systems
  • Material and size: PVDF, sturdy, wear-resistant and durable

Cons

  • The Check Valve might not work well.
7/25
Valterra 200-C15W PVC Swing (No Spring) Check Valve, Clear, 1-1/2
9.1
Based On 255 Reviews
  • Easy to use
    9.5
  • Value for money
    9.6
  • Customer support
    8
  • Overall satisfaction
    9.3

Pros

  • PVC for corrosion resistance
  • Full flow design
  • Slip connection
  • Maximum pressure rating 150 psi
  • Meets ASTM and ANSI standards

Cons

  • The valve might not close properly.
8/25
Check Valve, PVDF Wear-Resistant One-Way Check Valve for Fuel Gas Liquid Air, 1/4 Inch 6 mm (2)
9.1
Based On 162 Reviews
  • Easy to use
    9.5
  • Value for money
    9.5
  • Customer support
    8
  • Overall satisfaction
    9.3

Pros

  • Check valve for effective performance
  • Durable material
  • Nice wear-resistant feature
  • Size information

Cons

  • It may not be durable.
9/25
PAGOW 1/4 Inch Check Valve, 4 Packs 6mm PVDF Wear-Resistant One-Way Check Valve for Fuel Gas Liquid Air, Plastic Water Stops Check Valve, Micro Diaphr
8.9
Based On 146 Reviews
  • Easy to use
    9.0
  • Value for money
    9.5
  • Customer support
    8
  • Overall satisfaction
    8.9

Pros

  • Medical grade PVDF material
  • Safe and nontoxic
  • Durable AND stable for long time
  • Normal performance under -30 ℃ to 150 ℃
  • Excellent chemical and hydrolysis resistance, outstanding ozone, UV and weather resistance

Cons

  • It is a little bit expensive.
10/25
Check Valve, 3/8 Inch 10 mm ABS Plug-in Check Valve Fuel Oil Water Gas Air One-Way Check Valve for Liquids and Gases (6 Pieces)
9.0
Based On 133 Reviews
  • Easy to use
    9.3
  • Value for money
    9.7
  • Customer support
    8
  • Overall satisfaction
    9.1

Pros

  • Made of high quality ABS plastic
  • Silicone valve core for better performance
  • Suitable size: 3/8 inch

Cons

  • It might leak.
11/25
Homewerks VCKP40B7B in-Line Check Valve, x Female Thread, PVC Schedule 40, 1-1/2-Inch, 1.5-Inch, White
8.9
Based On 108 Reviews
  • Easy to use
    9.0
  • Value for money
    9.7
  • Customer support
    8
  • Overall satisfaction
    8.9

Pros

  • Fits both Schedule 40 and Schedule 80 pipe
  • O-ring seal
  • Spring loaded poppet
  • Stainless steel spring
  • Complies with ANSI B20

Cons

  • It may not be compatible with some plumbing.
12/25
Metaland One Way Check Valve, 1/2
8.3
Based On 105 Reviews
  • Easy to use
    8.4
  • Value for money
    9.6
  • Customer support
    7
  • Overall satisfaction
    8.2

Pros

  • Check valves
  • Material

Cons

  • It may not be resistant to Ozone.
13/25
BBTUS 1/4
9.5
Based On 90 Reviews
  • Easy to use
    9.7
  • Value for money
    9.7
  • Customer support
    9
  • Overall satisfaction
    9.5

Pros

  • Shell material is PVDF
  • Diaphragm material is VITON
  • Performance under -30℃ to 150℃
  • Application: Widely used in water treatment, air purification, automotive parts

Cons

  • It might not be durable.
14/25
John Guest Acetal Copolymer Tube Fitting, Imperial Single Check Valve, 3/8
9.1
Based On 86 Reviews
  • Easy to use
    9.5
  • Value for money
    9.6
  • Customer support
    8
  • Overall satisfaction
    9.3

Pros

  • Imperial single check valve
  • Accepts nylon and polyurethane tube fittings
  • Acetal copolymer plastic for low moisture absorption and high tensile and flexural strength
  • Working pressure of up to 145 psi
  • Meets NSF/ANSI standards 14, 51, and 61

Cons

  • It might leak.
15/25
ANPTGHT One Way Check Valve 3/8
8.8
Based On 80 Reviews
  • Easy to use
    8.8
  • Value for money
    9.6
  • Customer support
    8
  • Overall satisfaction
    8.7

Pros

  • Material: PVED
  • Size: Can fit 3/8" hose ID
  • Function: The check valves are applicable for fluid systems to prevent countercurrent liquids, or for pneumatic systems to prevent reverse flow of compressed air.
  • Performance: Hose barb check valve’s Opening pressure: 0.5 Kpa, Maximum back pressure: 30

Cons

  • The valves might not be sturdy.
16/25
AY McDonald 4424-101 2069C 2 Clear Silent Check Valve

AY McDonald 4424-101 2069C 2 Clear Silent Check Valve

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9.5
Based On 65 Reviews
  • Easy to use
    9.7
  • Value for money
    9.7
  • Customer support
    9
  • Overall satisfaction
    9.5

Pros

  • Eliminates the typical hammering of a sump check valve
  • All valves are pressure tested for leak-proof performance
  • Stainless steel clamps included

Cons

  • It might not be very clear.
17/25
Magic Plastics CR2 Corrosion Resistant Check Valve, 2
9.6
Based On 61 Reviews
  • Easy to use
    9.9
  • Value for money
    9.7
  • Customer support
    9
  • Overall satisfaction
    9.7

Pros

  • 100% Silicone Gasket
  • Clear Sight Glass
  • Removable/Serviceable Lid
  • Hastelloy Spring

Cons

  • It might not work.
18/25
Midline Valve PVC Inline Check Valve for Backflow Prevention 3/4'' FIP White Plastic (4I2U34)
8.9
Based On 64 Reviews
  • Easy to use
    9.0
  • Value for money
    9.7
  • Customer support
    8
  • Overall satisfaction
    8.9

Pros

  • LEAK-FREE: Female Threaded Ball Valve
  • Stainless Steel Spring Loaded Check
  • Specifications: Cracking Pressure @ .5 PSI; 150 PSI at 73°; Temperature Range 41°- 140°
  • ISO 9002 Approved Manufacturer
  • ANSI.B1.20.1 and ASTM F1970 Approved

Cons

  • It is small and might not be able to handle a lot of pressure.
19/25
Campbell SFV-75 49389 Brady Combination Foot/Check Valve 200 Psi 3/4
9.6
Based On 53 Reviews
  • Easy to use
    9.9
  • Value for money
    9.8
  • Customer support
    9
  • Overall satisfaction
    9.7

Pros

  • 1.Make sure this fits by entering your model number.
  • United States

Cons

  • It may not fit all feet.
20/25
Zoeller 30-0043 50 psi PVC 2-Port Check Valve, 2

Zoeller 30-0043 50 psi PVC 2-Port Check Valve, 2"

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prime
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9.5
Based On 54 Reviews
  • Easy to use
    9.7
  • Value for money
    9.9
  • Customer support
    9
  • Overall satisfaction
    9.5

Pros

  • Eliminates water hammer
  • Reduced noise from plumbing system
  • Designed for both horizontal and vertical usage
  • Full-flow, non-clog design installation
  • Durably constructed

Cons

  • It might not be strong enough.
21/25
JoyTube 5 Packs Check Valve 1/8”(3MM) One-Way PVDF Plastic Hose Barb for Fuel Gas Liquid Air
8.7
Based On 57 Reviews
  • Easy to use
    8.6
  • Value for money
    9.6
  • Customer support
    8
  • Overall satisfaction
    8.4

Pros

  • One way inline check valve
  • Barb hose check valve
  • Opening pressure: 0.5 Kpa
  • Maximum back pressure: 300Kpa
  • PVDF wear resistant

Cons

  • It may leak.
22/25
Check Valves 3/4 inch, UPVC True Union Swing Check Valves 3/4’’, Clear
9.1
Based On 45 Reviews
  • Easy to use
    9.7
  • Value for money
    8.0
  • Customer support
    9
  • Overall satisfaction
    9.5

Pros

  • Maximum pressure rating of 150 psi
  • True union check valve for easy cleanliness
  • Swing check valve for accurate readings

Cons

  • It is a bit expensive.
23/25
YXCC 8 Pcs 1/4
8.7
Based On 50 Reviews
  • Easy to use
    8.6
  • Value for money
    9.7
  • Customer support
    8
  • Overall satisfaction
    8.4

Pros

  • Check valves for fluid systems
  • Flat,non-patterned side is inlet
  • Raised,patterned side is outlet

Cons

  • The valve might not work properly.
24/25
10 Pack 5/16 inch Plastic Check Valve, One Way Barb Hose Inline Non Return For Fuel, Oil, Water, Air
8.0
Based On 16 Reviews
  • Easy to use
    7.8
  • Value for money
    9.6
  • Customer support
    7
  • Overall satisfaction
    7.6

Pros

  • Made of PVDF material
  • Suitable for a variety of fluids
  • Simple design and compact size

Cons

  • It might not be sturdy.
25/25
Checkvlv Quiet1.5

Checkvlv Quiet1.5"Hc Wht

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9.8
Based On 6 Reviews
  • Easy to use
    10
  • Value for money
    10
  • Customer support
    9
  • Overall satisfaction
    10

Pros

  • Lead-Free
  • Connections: 1-1/2 in.
  • Hose clamp connections
  • Quiet Check Valve
  • Material: Plastic

Cons

  • It may be too quiet.

Authors

Michael Gordon
Michael Gordon— Author

Michael Gordon is a writer on our Website. He is experienced in Hydraulics, Pneumatics & Plumbing section.

What to Look to have the Best Plastic Check Valves?

What can I use instead of a check valve?

A floating type ball valve can be a good option to use in place of a check valve. It is useful for preventing backflow and can also be used as a shut-off valve if needed.

The ball valve can be used in various applications, such as water systems or air conditioning units

What type of check valve is best?

A swing check valve is an automatic type that does not require any external power or control to operate and can be used for many different applications.

They are inexpensive and can be used in a variety of settings, such as water systems and pipelines. The flow direction determines the valve’s operation- typically it will open when the pressure increases on one side of the valve and close when the pressure decreases on either side

Do PVC check valves restrict flow?

In general, check valves can restrict water flow in the open and closed positions. When checking valve is positioned in the closed position, it will impede water from flowing out of the faucet while allowing water to enter when it's in the open position.

If a check valve jams either in the open or closed position, turn off the main supply to your home and remove any obstructions before attempting to repair or replace it

What are check valves used for?

Check valves are used to prevent backflow in water pipelines and other types of piping systems. When the flow turns the valve, it breaks down and prevents backflow.

A check valve can be found in water pipelines and other types of piping systems

Are check valves air tight?

A ball check valve can easily wear down and require a completely air-tight seal in order to work properly. Cheap options for air-tight seals often do not provide the necessary level of security, making them an easy option to ignore.

Installing a check valve is simple and does not require complete airtightness - making it an ideal choice for on-the-go situations

What is the difference between a check valve and a backflow valve?

A check valve is used to prevent water from backflowing and a backflow prevention device applies increased pressure to the pipe so that only water can flow in one direction.

Check valves are typically found on faucets and shower heads while backflow prevention devices are more commonly seen on pipes such as those carrying wastewater or irrigation water.

Knowing the difference between these two types of valves can help you protect your property and safety

Does a foot valve work as a check valve?

A foot valve is often used in pumping situations to control the flow of liquid or gas. Foot valves are one-way only and should be fitted with a second check valve if backflow is a concern.

Make sure the sump is clear before fitting a foot valve as there will be a pressure drop when doing so

What are the 5 types of check valves?

A swing check valve allows water to flow in one direction while preventing air from entering the system; this is used in faucets and other applications where a backflow of air could cause damage.

A lift (piston and ball) check valve has two moving parts that work together to open or close the valve: when pressure is applied, the movable piston pushes up on a stationary ball, which then opens the valve.

Butterfly valves are shaped like butterflies so they can move independently of each other; their main use is for controlling water pressure in irrigation systems and firefighting apparatuses. Stop valves have a hinge at one end that allows it to be opened partially—this lets you stop water flowing completely without having to remove the entire fixture or turn off your taps entirely Tilting-disk valves have disks that rotate as they sit in the pipe, allowing different amounts of liquid to pass through at any given time

What are the three different types of check valves?

Ball check valves are used when air needs to escape quickly, such as in an engine. Piston check valves are often found on water pipes and allow for gradual release of pressure.

Stop check valves can be either manual or automatic and help to prevent flooding by halting the flow of water until the correct level is reached

Is a swing or spring check valve better?

Depending on your particular needs, a swing or spring check valve may be better for you. Impact of waterhammer is important to consider when choosing a check valve type.

Spring loaded and swing valves both have their benefits and drawbacks, so it’s important to choose the right one for your application.

Does a check valve have to be horizontal?

A check valve can be installed in either horizontal or vertical pipes, depending on your installation needs. The flow will run up when the valve is mounted vertically, so it's important to get this part close to the fixture.

You must mount the check valve very close to where you'll use it for optimal performance

Do check valves hold pressure?

Make sure that your check valves are holding pressure by checking the fluid level indicator. If you notice any leakage, consider replacing your diaphragm or ball check valve.

In general, pin-typecheck valves are less likely to fail than other types of valves and are easier to maintain

Does a double check valve reduce pressure?

A double check valve is a common device used in pressure relief systems. It helps to reduce the pressure differential across two check valves, which ensures a reliable seal.

Closing one of the check valves reduces the pressure differential, which ensures a reliable seal

Conclusion

Plastic check valves can cause a lot of problems in water systems, so it is important to be aware of their dangers and take appropriate action if you notice them. If your water system has plastic check valves, it is important to have them replaced as soon as possible.