Soft Seat Wafer Double Disc Check Valve

Soft Seat Wafer Double Disc Check Valve

Overview

Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, or inexpensive. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of plastic or metal.

An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate. Typically the check valve is designed for and can therefore be specified for a specific cracking pressure.

Products Description

Nominal diameter	1.5" - 48"（DN40 - DN1200）
Pressure range	150LB - 1500LB (PN16 - PN420)
Temperature	-196℃ - 560℃
Material	A105,LF2,F11,F22,F304,F316,F304L,F316L
Connection	Socket  welding or inner screwed
Feature	Full  bore or reduced bore, B.B or W.B or pressure seal bonnet, through way, OS&Y
Actuator	Hand  wheel
Application	Oil and  gas pipeline   Drainage system   Chemical Plant

Main Parameter Specification

Inspection and test: API598, JB/T9092;

Design and manufacture: API594, API 6D, JB/TB8937;

Face to face and end to end: API594, API6D, DIN3202, JB/T8937;
Pressure-temperature rating: ASME B16.34, DIN2410, GB/T9124, HG20625, SH3406, JB/T74.

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