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Home  >  Check Valves

Check Valves

Check Valves

Valve Selection Guide

We will step you through your application type, fluid type, temperature and pressure, response time and maintenance requirements.

See our technical resource on:
Valve Terms
Selecting your Valve

Choose from a variety of product offerings within 15 categories of valve types:

Ball Valves: designed primarily for on/off service. These valves contain a ball with a hole through it. A handle or electric actuator rotates the ball 90°, turning the flow on or off. Use plastic ball valves for liquids only; metal valves for liquids or gases.

Check Valves: self-actuated valves designed to prevent fluid from flowing backward into your system. Flow forces a ball or disk in one direction to open the valve; when flow stops, the ball or disk seats to close the valve.

Diaphragm Valves: use a flexible diaphragm to shut off flow—center of the diaphragm is pushed down into a seat. Use these valves for fluids that are dirty or have a high particulate content.

Elliptical Valves: similar to ball valves except elliptical valves use an elliptic O-ring to seal the cylinder during rotation. The seal design makes these valves ideal for vacuum applications.

Metering Valves: multi-turn valves designed to regulate the flow of fluid. These valves generally have low flow rates and high pressure differentials.

Needle Valves: feature the most accurate flow control among the valves we offer. They are an excellent choice for precise metering of liquids or gases.

Pinch Valves: squeeze shut a piece of tubing. Fluid contacts only the tubing—ideal for your high-purity fluid applications.

Plug Valves: used primarily for on/off service. Controls flow using a plug with a hole through it. Plugs can be made of rigid materials such as PTFE, making them ideal for high-purity applications.

Pressure Valves: designed to control or limit pressure—not flow—in a system. These self-actuating valves will either open a relief port or bypass the fluid when a preset limit is reached.

Proportioning Valves: designed to produce variable flow rates. Valves open and close in proportion to the signal from your controller.

Sample Valves: special three-way valve designed to tap off a portion of the main flow for sampling purposes.

Sanitary Valves: commonly feature Tri-Clamp® connections and 316 stainless steel body construction for sanitary and high-purity applications.

Solenoid Valves (Direct Lift): use a plunger that is actuated to open or close the fluid path. They generally have quicker response time than pilot-operated valves.

Solenoid Valves (Air Controlled): utilize pressure created by air or liquids for actuation purposes. These valves are either piston or diaphragm types and require differential pressure to keep valve closed. Because they don’t have a plunger, they are usually available in larger orifice sizes than direct lift valves.

Stopcocks: similar to ball valves except stopcocks are much smaller in size. Primarily used in the laboratory for on/off control of flow or as a crude regulation of flow rate.

 Product Detail
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 Availability
 Price
EW-98553-10 Representative Photo Only.  PP Miniature Check Valve, 1/8" hose barb, Viton<small><sup>&reg;</sup></small> diaphragm

PP Miniature Check Valve, 1/8" hose barb, Viton diaphragm

Cv 0.11,Material polypropylene,Max temperature º F 200
EW-98553-10
In stock.
$9.95 USD/EACH

Qty:

EW-98553-22 Representative Photo Only.  PVDF Miniature Check Valve, 1/4" hose barb, Viton<small><sup>&reg;</sup></small> diaphragm

PVDF Miniature Check Valve, 1/4" hose barb, Viton diaphragm

Cv 0.12,Material PVDF,Max temperature º F 250
EW-98553-22
In stock.
$9.00 USD/EACH

Qty:

EW-98553-02 Representative Photo Only.  Nylon Miniature Check Valve, 1/4" hose barb, fluorosilicone diaphragm

Nylon Miniature Check Valve, 1/4" hose barb, fluorosilicone diaphragm

Cv 0.13,Material nylon,Max temperature º F 250
EW-98553-02
In stock.
$4.80 USD/EACH

Qty:

EW-06373-57 Poppet Check Valve, 1/4" NPT(F) connections

Poppet Check Valve, 1/4" NPT(F) connections

Cv 0.75,Max pressure psi 1,Product Type Check Valves (manual)
EW-06373-57
In stock.
$245.00 USD/EACH

Qty:

EW-98553-01 Representative Photo Only.  Nylon Miniature Check Valve, 3/16" hose barb, fluorosilicone diaphragm

Nylon Miniature Check Valve, 3/16" hose barb, fluorosilicone diaphragm

Cv 0.13,Material nylon,Max temperature º F 250
EW-98553-01
In stock.
$4.80 USD/EACH

Qty:

EW-98553-34 Representative Photo Only.  PVDF Miniature Check Valve, 3/8" hose barb, Viton<small><sup>&reg;</sup></small> diaphragm

PVDF Miniature Check Valve, 3/8" hose barb, Viton diaphragm

Cv 0.12,Material PVDF,Max temperature º F 250
EW-98553-34
In stock.
$10.00 USD/EACH

Qty:

EW-98553-12 Representative Photo Only.  PP Miniature Check Valve, 1/4" hose barb, Viton<small><sup>&reg;</sup></small> diaphragm

PP Miniature Check Valve, 1/4" hose barb, Viton diaphragm

Cv 0.12,Material polypropylene,Max temperature º F 200
EW-98553-12
In stock.
$6.25 USD/EACH

Qty:

EW-98553-00 Nylon Miniature Check Valve, 1/8" hose barb, fluorosilicone diaphragm

Nylon Miniature Check Valve, 1/8" hose barb, fluorosilicone diaphragm

Cv 0.12,Material nylon,Max temperature º F 250
EW-98553-00
In stock.
$4.80 USD/EACH

Qty:

EW-06304-20 Bel-Art<small><sup>&reg;</sup></small> PP Check Valve, 1/4

Bel-Art PP Check Valve, 1/4" to 3/8" hose barb, 6/bag

Material Polypropylene,Tubing " ID 1/4 to 3/8,Max temperature º F 250
EW-06304-20
In stock.
$52.00 USD/BAG of 6

Qty:

EW-06304-30 Representative Photo Only.  Bel-Art<small><sup>&reg;</sup></small> PP Check Valve, 3/8" to 1/2" hose barb, 6/bag

Bel-Art PP Check Valve, 3/8" to 1/2" hose barb, 6/bag

Material Polypropylene,Tubing " ID 3/8 to 1/2,Max temperature º F 250
EW-06304-30
In stock.
$52.00 USD/BAG of 6

Qty:

EW-98553-21 Representative Photo Only.  PVDF Miniature Check Valve, 3/16" hose barb, Viton<small><sup>&reg;</sup></small> diaphragm

PVDF Miniature Check Valve, 3/16" hose barb, Viton diaphragm

Cv 0.12,Material PVDF,Max temperature º F 250
EW-98553-21
In stock.
$9.25 USD/EACH

Qty:

EW-98553-11 Representative Photo Only.  PP Miniature Check Valve, 3/16" hose barb, Viton<small><sup>&reg;</sup></small> diaphragm

PP Miniature Check Valve, 3/16" hose barb, Viton diaphragm

Cv 0.12,Material polypropylene,Max temperature º F 200
EW-98553-11
In stock.
$6.25 USD/EACH

Qty:

EW-98676-16 BRASS CHECK VALVE, 3/8&QUOT; NPT(F) CONNECTION

Brass Check Valve, 3/8" NPT(F) Connection

Dimensions " D 1,Dimensions " L 2,Housing material Silicon alloy
EW-98676-16
Usually ships in 5 days.
$45.00 USD/EACH

Qty:

EW-06304-10 Bel-Art<small><sup>&reg;</sup></small> PP Check Valve, 1/8

Bel-Art PP Check Valve, 1/8" to 1/4" hose barb, 6/bag

Material Polypropylene,Tubing " ID 1/8 to 1/4,Max temperature º F 250
EW-06304-10
In stock.
$52.00 USD/BAG of 6

Qty:

Representative photo only Cole Parmer inert in line female check valve 0 014 Cv PEEK Chemraz

Cole-Parmer inert in-line female check valve; 0.014 Cv, PEEK/Chemraz

Cv 0.014,Material PEEK,Max pressure psi 0.23
EW-01355-28
Available for order
or call 1-888-358-4705 to order
$103.00 USD/EACH

Qty:

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