CF8M Stainless Steel Check Valve Manufacturing

VTXFLOW manufactures check valves in ASTM A351 CF8M (316) — a molybdenum-bearing austenitic stainless steel that resists chlorides, organic acids and marine atmospheres. With a working range of -196°C to +538°C, CF8M bodies suit chemical & petrochemical processing and seawater & desalination across Class 150 to 2500 service.

CF8M is the workhorse stainless grade for corrosive duty. The 2–3% molybdenum addition gives it pitting resistance that plain CF8 lacks, and it stays impact-tough from cryogenic temperatures up to 538°C. Specify it wherever chlorides, acids or product purity are in play — the 60–100% premium over WCB buys corrosion life, not strength.

Every CF8M check valve is cast or forged in-house, machined on CNC centers and 100% shell and seat tested to API 598 / ISO 5208 before shipment, with EN 10204 3.1 material certificates traceable to the heat. PMI verification is available on request for stainless and alloy grades.

Material grade: ASTM A351 CF8M (316) (forged equivalent: F316)
Temperature range -196°C to +538°C
Optimized disc dynamics minimize slam and water hammer
Renewable seat rings on cast designs

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CF8M Stainless Steel Check Valve — VTXFLOW

Technical Specifications

Size Range	1/2" – 48" (DN15 – DN1200)
Pressure Class	ASME 150 – 2500 LB / PN16 – PN420
Design Standards	API 6D, BS 1868, API 594, JIS B2071
End Connections	RF, RTJ, BW, Wafer, Lug
Material Grade	ASTM A351 CF8M (316)
Forged Equivalent	F316
Temperature Range	-196°C to +538°C

Typical Services for CF8M

Chemical & petrochemical processingSeawater & desalinationFood-adjacent utilitiesCryogenic service to -196°C

CF8M in Other Valve Types

CF8M Ball Valve CF8M Gate Valve CF8M Globe Valve CF8M Butterfly Valve CF8M Strainer CF8M Cryogenic Valve

Check Valves in Other Materials

WCB Check Valve CF8 Check Valve A105 Check Valve All Check Valves →

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Need a cf8m stainless steel check valve? Tell us your size, pressure class, standard and quantity — our engineers respond within 24 hours.