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Dual Plate Check Valve
C.I / C.S / S.S
Pressure Class
Size 2" to 24"
Standard PN10 / PN16
125# / 150# / 300# / 600#
High Performance

INTRO dual plate check valve

The Dual Plate Check Valve is the most versatile and compact backflow prevention solution in modern industrial piping. Its spring-assisted dual plates close rapidly before flow reversal, effectively eliminating water hammer and ensuring a non-slam performance. At INTRO VALVE INDUSTRIES, we manufacture these valves with precision-engineered springs and independent hinge pins for maximum reliability in high-cycle applications.

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Key Performance Advantages:

  • Extremely short Face-to-Face (API 594)
  • Lightweight construction reduces piping support costs
  • Low pressure drop with high flow efficiency
Applications: Pumping stations, Cooling water loops, HVAC, Desalination plants, and chemical processing.
Design Standards: API 594 / API 598 / ASME B16.34
End Connections: Wafer, Lug, Double Flanged.
Materials: Body: CI, DI, WCB, CF8, CF8M. Plate: DI (Nylon coated), CF8M, Al-Bronze. Spring: SS304/SS316/Inconel.
Component Standard Material Technical Data / Variants
BodyCI / DI / WCB / SSFG 260 / GGG 40 / A216 WCB / A351 CF8M
Plates (Disc)SS / DI / Al-BronzeAISI 304 / 316 / Monel / CF8 / CF8M
SpringSS 304 / 316 / InconelSpring-assisted closure (Non-Slam)
SeatEPDM / Viton / MetalIntegral or Replaceable Resilient Seat
Hinge / Stop PinStainless SteelAISI 410 / 304 / 316
BearingsPTFE / BronzeReduces friction for smooth plate movement
EyeboltCarbon SteelStandard for sizes 6" and above