ASTM A105 Wafer Check Valve, API 594, 2 Inch, 1500 LB, DN50

Product Name: ASTM A105 Wafer Check Valve, Dual Plate
Design Standard: API 594
Body Material: ASTM A105
Size: 2 Inch, DN50
Pressure: Class 1500 LB, PN250
End Connection: Wafer

KOSEN specializes in manufacturing wafer check valves designed for efficient flow control. The valve features a center vertical pin shaft that ensures smooth operation. When the valve opens, the resultant force of the fluid is applied to the center of the disc's sealing face, while the counter spring support force acts on the center of the disc surface. This unique design causes the root of the disc to open first, preventing wear on the sealing surface—a common issue in traditional valves. As a result, the valve's seal performance is enhanced and its longevity increased.
The wafer check valve operates automatically, opening and closing in response to the flow of the medium. It is primarily used to prevent reverse flow, ensuring reliable fluid direction control in the pipeline.

Technical Specifications

» 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, Clamp, 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
» Butt Welded End Standards: ANSI B16.25
» Test and Inspection Standards: API 598, DIN 3230, JB/T 9092
» Temperature Range: -29°C to 595°C
» Medium: Water, gas, oil, etc.

Product Features

» Light and Compact: Designed for easy installation and space efficiency.
» Zero Leakage Sealing Design with Soft Seat: Offering a reliable, leak-free seal.
» Non-Slam Design: Minimizing valve slamming for enhanced durability.
» Bubble-Tight Closure: Ensuring a secure and tight shut-off.
» Discs Open 85°: Ensuring low pressure drop for improved flow efficiency.