ASTM A216 WCB Dual Plate Check Valve, API 594, 36 IN, CL900

Product Name: Flange Type Dual Plate Check Valve
Type: Wafer Check Valve
Design Standard: API 594
Body Material: ASTM A216 WCB
Size: 36 Inch, DN900
Pressure: Class 900 LB, PN150
End Connection: Double Flanged
Temperature Range: -29°C to 595°C
Medium: Water, Gas, Oil, etc.

We are a specialized manufacturer of wafer check valves, offering advanced designs for reliable backflow prevention. These valves feature a center vertical pin shaft configuration, allowing fluid force to act precisely on the center of the disc's sealing surface. Simultaneously, the spring support force is aligned with the disc center, ensuring the disc opens from the root first.
This intelligent design minimizes wear on the sealing surface, an issue common in conventional valves, and significantly enhances the durability and sealing performance over time. Wafer check valves operate automatically, opening and closing based on the direction of the medium's flow, and are ideal for preventing reverse flow in piping systems.

Technical Specification

» Nominal Diameter: NPS 2–60 Inch (DN50–DN1500)
» Design Pressure: Class 150–2500 (PN10–PN420)
» Materials: ASTM A216 WCB, WCC, A217 WC6, WC9, C5, C12A, A352 LCB, LCC, A351 CF8, CF8M, CF3M, CF8C
» End Connections: wafer, Lug, Flanged.
» Design and Manufacture Standards: API 594, API 6D, JB/T 8937
» Face-to-Face (End-to-End): API 594, API 6D, JB/T 8937, DIN 3202
» Flanged Connection Standards: ANSI B16.5, DIN 2543–48, JB/T 9112–24
» Test and Inspection Standards: API 598, DIN 3230, JB/T 9092

Structural Diagram

Product Features

» Light and Compact: Space-saving design for easy installation and minimal weight
» Zero Leakage Sealing Design with Soft Seat: Ensures reliable sealing with no leakage
» Non-Slam Design: Prevents water hammer by controlling the disc movement
» Bubble-Tight Shutoff: Guarantees a tight seal, preventing any unwanted flow
» Discs Open 85°: Maximizes flow efficiency while minimizing pressure drop