SUBSEA AXIAL CHECK VALVE

Subsea axial check valves are designed according to API6DSS, API6A, API17D with the addition of customer requirements when present. The valves do not rely on lubricant or grease to assist sealing between plug and seat. Metal-to-metal sealing is used between disc and seat where seat is integral to valve body.

Suitable for: Subsea

BASIC CHARACTERISTICS

API6DSS, API6A, API17D design as requested
Metal-to-metal sealing. Gas tight as per API6A PSL3G, PSL4.
Non-elastomeric seals to avoid the risk of gradual degradation of the seals over their life
Streamlined flow path through full-port expanded body avoids turbulence and prevents erosion and vibration.
The low static pressure in the throat area is applied behind the disc and creates a pressure differential over the disc, resulting in easy opening.
Extremely stable during operation. The axial check valve responds smoothly to changes in flow and remains stable.
The spring-assisted design ensures ultra-fast closing without backflow and pressure surges in critical applications.
Forged material to comply with API6A PSL3

OTHER CHARACTERISTICS

	900-1500 lbs / 3000 psi	5000 psi / 2500 lbs	7500 psi	10000 psi	15000 psi
½”-2”	Standard	Standard	Standard	Standard	Standard
4”-12”	Standard	Standard	Standard	Standard	Standard

BODY, PUPS	ASTM A350-LF2 + Inconel 625 overlay ASTM A694-F52/F56/F60/F65 + Inconel 625 overlay ASTM A182-F22 + Inconel 625 overlay Duplex 22% Cr Superduplex 25% Cr Inconel 625
TRIM (PLUG, DIFFUSER)	ASTM A350-LF2 + Inconel 625 overlay Stainless Steel (AISI 410, AISI316) Duplex 22% Cr Superduplex 25% Cr Inconel 625 Inconel 718

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