West Group Check Valve Catalogue
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Check Valves

Index About Check Valves • A check valve is designed to allow the flow of either liquid or gas one way • Check valves are also known as non-return or one-way valves, and are often used as pressure relief valves. The basic design of a check valve inhibits backflow • As a specialist supplier of miniature components, West Group’s product portfolio includes a comprehensive range of check valve options. Depending upon the type of check valve chosen, the operation of the check valve differs from type to type • Our check valve types are extensive. These include Floating Disc, Diaphragm, Duckbill,...

Need a custom check valve? Our check valve range is extensive. The West Group offer custom check valve configuration, where you can build the valve specification that your application requires. For more information email us at info@westgroup.co.uk Example Product Code: E - C 5 8 - P G - 2 N B 1 G R - N 3 Check Valve Cartridge Cartridge Diameter 5/8" Valve Body Material PP30%GF (g) O-ring Material - Nitrile 60 sh (h) Cracking Pressure - 3 psi (a) Inlet Connector / Type - Push-In (b) Inlet Connector / Size - 6mm (d) Outlet Connector / Type - Barb (c) Inlet Connector / Colour - Blue (e) Outlet...

E-C58-PG-1ER1ER-N0.5 - Modular Polypropylene Red Bodied Check Valve, 1/4� Barb Input and Output, Nitrile Seals, Cracking Pressure 0.5 psi Actual Size Technical Data Max. Inlet Pressure: 5 bar (75 psi) Connections: Barb Fitting to suit 1/4� (6.4mm) OD tube Mounting Style: In-Line Wetted Materials: Glass Filled Polypropylene, Polypropylene, Buna-N, 302 Stainless Steel Non-wetted Materials: Glass Filled Polypropylene Media/Ambient Temperature: 5°C to 50°C (41°F to 122°F) Recommended Filtration: Depending on application RoHS/REACH Compliant: Yes Regulatory Information: FDA CFR21 Other Technical...

E-C58-PG-2ER2ER-N0.5 - Modular Polypropylene Red Bodied Check Valve, 1/4� Push-In Input and Output, Nitrile Seals, Cracking Pressure 0.5 psi Actual Size Technical Data Max. Inlet Pressure: 5 bar (75 psi) Connections: Push-In Fitting to suit 1/4� (6.4mm) OD tube Mounting Style: In-Line Wetted Materials: Glass Filled Polypropylene, Polypropylene, Buna-N, 302 Stainless Steel Non-wetted Materials: Glass Filled Polypropylene Media/Ambient Temperature: 5°C to 50°C (41°F to 122°F) Recommended Filtration: Depending on application RoHS/REACH Compliant: Yes Regulatory Information: FDA CFR21 Other...

E-C58-PG-3CR3CR-N0.5 - Modular Polypropylene Red Check Valve, G1/8� Female Input and Output, Nitrile Seals, Cracking Pressure 0.5 psi Actual Size Technical Data E-CC58-PP-N0.5 - Polypropylene Cartridge for Modular Check Valve, Nitrile Seals, Cracking Pressure 0.5 psi Actual Size Technical Data Max. Inlet Pressure: 5 bar (75 psi) Connections: G1/8� Female Thread Mounting Style: In-Line Wetted Materials: Glass Filled Polypropylene, Polypropylene, Buna-N, 302 Stainless Steel Non-wetted Materials: Glass Filled Polypropylene Media/Ambient Temperature: 5°C to 50°C (41°F to 122°F) Recommended...

What is a Poppet/Ball? It is important to note that the poppet style check valve is usually designed to be normally closed. Poppet type valves generally utilise a spring to force shut the orifice by holding a component against a seal to replicate the backflow pressure. Spherical shapes like ball bearings with smooth surfaces, which seal against an O-ring seal, or poppets, which generally incorporate an O-ring seal and seal against a smooth face. When the forward pressure overcomes the spring force the valve opens. At this point the term cracking pressure is given to this action. An...

Poppets - Plastic E-C-180089 - Polypropylene Bodied Check Valve, EPDM Seal, 3.2mm (1/8�) ID Tube, Cracking Pressure 0.5 psi E-C-180085 - Polypropylene Bodied Check Valve, EPDM Seal, 6.4mm (1/4�) ID Tube, Cracking Pressure 0.5 psi Technical Data Technical Data Max. Inlet Pressure: 8.61 bar (125 psi) Connections: 3.2mm (1/8�) ID Tube Mounting Style: In-Line Wetted Materials: Polypropylene, EPDM, 316 & 302 Stainless Steel Non-wetted Materials: Polypropylene Recommended Filtration: Depending on application RoHS/REACH Compliant: Yes Other Technical Data: A miniature In-Line Polypropylene bodied...

Poppets - Plastic E-C-180061 - Kynar® Bodied Check Valve, EPDM Seal, 3.2mm (1/8�) ID Tube, Cracking Pressure 0.33 psi E-C-180053 - Kynar® Bodied Check Valve, EPDM Seal, 6.4mm (1/4�) ID Tube, Cracking Pressure 0.33 psi Technical Data Technical Data Max. Inlet Pressure: 8.61 bar (125 psi) Connections: 3.2mm (1/8�) ID Tube Mounting Style: In-Line Wetted Materials: Kynar®, Viton, 316 & 302 Stainless Steel Non-wetted Materials: Kynar® Recommended Filtration: Depending on application RoHS/REACH Compliant: Yes Other Technical Data: A miniature In-Line black PVDF (Kynar®) bodied check valve with an...

Poppets - Plastic E-C-190044 - Clear Gamma Grade Polypropylene Bodied Check Valve, Silicone Stem, Luer Syringe Port to 6.4mm (1/4�) ID Tube E-C-180109 - Plastic Bodied Check Valve, Buna-N Seal, 4mm OD Push-In to M5 Male Thread, Cracking Pressure 7 psi Technical Data Technical Data Max. Inlet Pressure: 2.07 bar (30 psi) Connections: Luer Syringe Port to 6.4mm (1/4�) ID Tube Mounting Style: In-Line Wetted Materials: Polypropylene, Silicone, Recommended Filtration: Depending on application Regulatory Information: Meets Requirements for USP Class VI Cleanroom Manufactured: Class 7 cleanroom...

Poppets - Plastic E-C-180114 - Technopolymer Bodied Check Valve, Buna-N Seal, 4mm OD Push-In, Cracking Pressure 7 psi E-C-180107 - Technopolymer Bodied Check Valve, Buna-N Seal, M5 Male Thread to 4mm OD Push-In, Cracking Pressure 7 psi Technical Data Technical Data Max. Inlet Pressure: 12 bar (174 psi) Connections: 4mm OD Push-In Fitting Mounting Style: In-Line Wetted Materials: Technopolymer, Nickel Plated Brass, Buna-N, Stainless Steel Non-wetted Materials: Technopolymer, Nickel Plated Brass Media Temperature: -20°C to 60°C (-4°F to 140°F) Recommended Filtration: Depending on application...