Check valve

DESIGN AND MANUFACTURING:

BS 1868: Specification for steel check valves (flanged and butt-welding ends) for the petroleum, petrochemical, and allied industries.
ASME B 16.34: Valves-Flanged, Threaded, and Welding End.
API 602: Steel Gate, Globe and Check Valves for Sizes DN 100 and Smaller for the Petroleum and Natural Gas Industries
API 6D: Pipeline Valves. Pressure Test Specification.
API-594: Check Valves: Wafer, Wafer-Lug, and Double Flanged Type
BS-5352, Obsolete, replaced by ISO 15761
ISO 15761: Steel Gate, Globe and Check Valves for Sizes DN 100 and Smaller for the Petroleum and Natural Gas Industries (Equivalent to API 602)
API 602: Steel Gate, Globe and Check Valves for Sizes DN 100 and Smaller for the Petroleum and Natural Gas Industries (Equivalent to ISO 15761)

INSPECTION AND TEST:
API 6D: Pipeline Valves. Pressure Test Specification.
API 598: Valve Inspection and Testing.

FLANGE DIMENSION:
ASME B 16.5: Pipe Flanges and Flanged Fittings.
ASME B16.47: large-diameter steel flanges: NPS 26 through NPS 60
MSS SP 44: Steel pipeline flanges

WELDED OR THREADED ENDS:
ASME B16.25: Buttwelding ends
ASMEB16.11: Forged fittings, socket-welding, and threaded
ASME B1.20.1: Pipe threads general purpose

FACE TO FACE AND END TO END:
ASME B 16.10: Face-to-Face and End-to-End Dimensions of Valves.
API 6D: Pipeline Valves. Pressure Test Specification
API-594: Check Valves: Wafer, Wafer-Lug, and Double Flanged Type
* Other standards/ materials upon request

♦ MATERIALS:

Carbon steel; low-temperature carbon steel; alloy and stainless steel; duplex steel; super duplex steel; nickel alloys; titanium alloys, tungsten carbide coating; bronze … DI, WCB, WCC, WC1, WC6, WC9, C5, C12, LCB, LCC, CF8, CF8M, CF3, CF3M, CF8C, Bronze, 4A, 6A, AISI-904L, CK3MCUN, Duplex, Super duplex, exotic materials…

♦ CONSTRUCTION:

• Swing Type Disc
• Threaded, Welded, or integral Seat Ring
• Bolted Cover …

♦ ORIGINAL: Italy; Germany; Spain; EU; US; UK; Korea; Thailand …

* Other requirements upon request