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Home  >  Check Valves

Check Valves

Check Valves

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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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-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-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
Available for order
or call 1-888-358-4705 to order
$245.00 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-98553-01 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-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-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-06304-30 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-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-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-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:

Representative photo only PVC Check Valve 1 4 NPT F connections

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

Cv 0.5,Material PVC,Max temperature º F 140
EW-01350-20
Usually ships in 9 days.
$71.00 USD/EACH

Qty:

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