CF8 Stainless Steel Check Valve Manufacturing

VTXFLOW manufactures check valves in ASTM A351 CF8 (304) — a general-purpose austenitic stainless steel with good corrosion resistance in mild media. With a working range of -196°C to +538°C, CF8 bodies suit water treatment and mild chemical duty across Class 150 to 2500 service.

CF8 (cast 304) covers the wide middle ground between carbon steel and CF8M: full stainless corrosion resistance without the molybdenum premium. It is the economical choice for water treatment, mild chemicals and hygiene-adjacent utilities where chlorides are not concentrated — if they are, upgrade to CF8M.

Every CF8 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 CF8 (304) (forged equivalent: F304)
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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CF8 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 CF8 (304)
Forged Equivalent	F304
Temperature Range	-196°C to +538°C

Typical Services for CF8

Water treatmentMild chemical dutyGeneral stainless serviceLow-temperature applications

CF8 in Other Valve Types

CF8 Ball Valve CF8 Gate Valve CF8 Globe Valve CF8 Strainer

Check Valves in Other Materials

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Need a cf8 stainless steel check valve? Tell us your size, pressure class, standard and quantity — our engineers respond within 24 hours.