Check valves or non-return valves are one of the most demanding items that ZAFFERTEC S.L. is inquired to supply. The high quality Check Valves supplied by ZAFFERTEC S.L. makes the client completely sure of the safe functioning of the valve.
All the Check Valves that we supply are from the fully equipped mills and modern manufacturing workshops located in Europe belonging to the world leading firms.
ZAFFERTEC S.L. supplies the following types of Check Valves:
3/8" to 3" class ANSI 150 to 4500 for forging type
3" to 56" class ANSI 150 to 2500 for casting type
Design: ANSI B16.34, API-6D, API-608
Face to Face: ANSI B16.10
Flanged Ends: ANSI B16.5, B16.47 or MSS SP-44
Butt weld Ends: ANSI B16.25
Threading ends: NPT type ANSI B1.20.1
Socket Welding ends: ANSI B16.11
Test: API-598, API-6D or ANSI 16.34
Carbon Steel ASTM A105, A216WCB, WCA, WCC, A350LF2 & etc.
Carbon Steel for low temperature services ASTM A352 LCB, LCC.
Alloy Steel for high temperature services ASTM A217 WC6, WC9, C5, C12, C12A
Alloy Steel for low temperature services ASTM A352 grades LC1, LC2, LC3, LC4, LC9 and etc.
Stainless Steel Cast body such as ASTM A351 grades CF3, CF8, CF3M, CF8M, CF8C, CN7M and etc.
Stainless Steel Forged body or trim ASTM A182 grades F5, F6a, F11, F22, F44, F51, F53, F55, F304,
F304L, F316, F316L, F316Ti, F320, F321, F347 & etc.
Brass and Bronze alloys
PTFE, Glass PTFE, Graphite, Nylon, Viton for Seats and Seals