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Swing Check Valve

Swing Check are designed to reduce the flow resistance and pressure drop to the minimum possible extend. Lift check valves are suitable to mount in horizontal position only. Accurately machined, lapped and screwed in seat ring ensures tight shut of and long life. The valve disc is perfectly designed, accurately machined and guided for efficient automatic shut off at zero pressure. As an option seat can b weld deposited or integrated with body in case of stainless steel and other high alloy metals.

VALVE DESIGN DATA

Size: 1/2"-20"

Nominal pres sure:  Class 150Lb-900Lb PN1.6-4.0MPa
Material:  WCB,LCB,CF8,CF8M,CF3,CF3M,A105,LF2,F304,F316,F304L,F316L
Design & Manufacture Std.:   API6D&BS1868、GB/T1236
Face to Face Std.: ANSI B16.34 、API 608 、API 6D
Flange、Thread End Connection Std.: ASME B16.5、 ANSI B1.20.1
API 608 is intended to provide the similar additional requirements for steel and alloy steel ball valves beyond
ASME B16.34 as do the following API standards for other valve types:
API  594, Check Valves: Flanged, Lug, Wafer and Butt-welding
API Standard 599, Metal Plug Valves—Flanged, Threaded and Welding Ends
API Standard 600, Bolted Bonnet Steel Gate Valves for Petroleum and Natural Gas Industries
API Standard 602, Steel Gate, Globe and Check Valves for Sizes DN 100 and Smaller for the Petroleum and Natural Gas Industries
API Standard 603, Corrosion-resistant, Bolted Bonnet Gate Valves Flanged and Butt-welding Ends
API 609, Butterfly Valves: Double Flanged, Lug and Wafer-type
ASME B1.20.1, Pipe Threads, General Purpose (Inch)
ASME B16.5, Pipe Flanges and Flanged Fittings NPS
ASME B16.10, Face-to-Face and End-to-End Dimensions
ASME B16.11, Forged Fittings, Socket-welding and Threaded
ASME B16.20, Metallic Gaskets for Pipe Flanges—Ring-joint, Spiral-wound and Jacketed
ASME B16.25, Butt Welding Ends
ASME B31.3  Process Piping
API 6FA  Fire Testing of Valves
API Std 598  Valve Inspection and Testing

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