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SMC 427 Series Poppet Check Valves


Design Considerations

  • The 427 Series Check incorporates a plastic poppet that seals on a quad ring.

  • Gray PVC with 1 psi stainless spring is the standard configuration.

  • Nylon, PVDF (Kynar®) and Glass Filled Polypropylene are available for chemical resistance applications.

  • MakroBlend is an NSF Standard 51 Approved Material.


Specifications

Material

Gray PVC (Standard), White PVC;

Black Polypropylene, White Polypropylene;

Black Nylon, White Nylon;

MakroBlend

Black PVDF (Kynar®)

End Options

1/8"Barb, 3/16"Barb, 1/4"Barb, 5/16"Barb, 3/8"Barb

1/8"Male NPT, 1/4"Male NPT

1/8"Female NPT, 1/4"Female NPT

1/4"Push-to-Connect, 5/16"Push-to-Connect, 3/8"Push-to-Connect

1/8"JACO, 1/4"JACO

3/8"BIB

Seal Option

Buna-N, Ethylene Propylene, Fluoroelastomer (Viton®)

Spring Option:

Cracking Pressure and Material

302 Stainless: 1/3 PSI, 1 PSI (Standard), 1.5 PSI, 3 PSI, 5 PSI, 7 PSI, 10 PSI, 12 PSI or No Spring,

Hastelloy Spring:1/3 PSI, 1 PSI, 3 PSI, 5 PSI, 12 PSI

Maximum Operating Pressure

125 PSI

Maximum Operating Temperature

140 °F

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