Pressure Balanced Non-Slam Piston Check Valves are designed for liquid or gas applications and to prevent back flow for pulsating flow applications. They have a unique pressure balanced internal piston and are full body configuration.

Basic Design: BS1868, ASME B16.34, API 6D
Sizes: 2″- 16″
Pressures: ANSI 150lb-2500lb
Materials: Cast Carbon / Alloy Steel
Ends: RF, RTJ, BW


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Liquid or Gas Application (setup for gas)
Non-Slam Pressure Balanced Internal Piston
Sizing Required (available via Altek Supply)
Available in Carbon Steel & Alloy Materials

Bolted Bonnet
Internal Piston Liner
Globe Shaped Piston Plug
Metal Seated
Renewable Seat
Tested to API 6D
ASME B16.34

Product FAQs

What sizes and ANSI Classes are available?

Sizes come in 2"-16". Available in pressure classes ANSI 150lb to 2500lb

What are the in-stock API trims available?

Please call for current availability. TR5, 12, Soft Std for API 6D standard stock.

Is DHV on the AML?

Please send us a request to check AML Approval.

Do you offer RP-metal seated and FP-API 6D?


Do you offer piston check valves for pulsating service?

Yes, for liquid and gas service. Process data required for sizing.

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