Tilting Disc Check Valve

For applications requiring reliable, low-pressure-drop backflow prevention, our high-performance Tilting Disc Check Valve represents a superior engineering solution. This valve is specifically designed to mitigate water hammer, reduce pressure loss, and ensure dependable sealing in a wide range of industrial and municipal systems. Unlike traditional swing check valves, the tilting disc design allows for a more controlled closure, significantly minimizing the risk of damaging pressure surges. We offer various configurations to meet precise operational needs. Our Non-hydraulic Tilting Butterfly Check Valve provides a simple, spring-assisted closure mechanism ideal for standard applications. For systems requiring external intervention or specific timing, the Manual Tilting Butterfly Check Valve offers precise control. Built for durability in demanding environments, the Ductile Iron Tilting Butterfly Check Valve delivers exceptional strength and corrosion resistance. Furthermore, our space-saving Wafer Tilting Butterfly Check Valve is engineered for easy installation between flanges in compact piping layouts.


The core design principle of the <产品名字> involves a disc that pivots on a shaft located near its center. This pivotal mounting point allows the disc to swing open with minimal flow resistance when forward pressure is applied. As flow velocity decreases or reverses, the disc smoothly returns to its sealed position, guided by the valve's internal mechanism or an external assist. This controlled tilting action is crucial for preventing sudden, high-impact closure, which is the primary cause of water hammer—a phenomenon that can lead to pipe damage, vibration, and system failure. The precision-engineered seat ensures a bubble-tight seal upon closure, preventing backflow and maintaining system integrity. This combination of low head loss, rapid response, and gentle seating makes the <产品名字> an indispensable component for protecting pumps, compressors, and other critical equipment in water treatment, HVAC, chemical processing, and power generation facilities.

Detailed Technical Specifications

  • Design & Standard: API 594, API 6D, ASME B16.34. Wafer, Lug, and Double Flange body styles available.
  • Body Materials: Ductile Iron (EN-GJS-450-10), Carbon Steel (WCB, LCC), Stainless Steel (CF8, CF8M, CF3, CF3M), Special alloys upon request.
  • Disc & Trim Materials: Stainless Steel (410, 316), with optional hardened surfaces or coatings (Stellite, Nickel Plating) for abrasive/corrosive service.
  • Seat: Resilient EPDM, NBR, or FKM (Viton) for tight sealing; Metal-to-metal seats (Stellite) available for high-temperature applications.
  • Pressure Rating: ANSI Class 125, 150, 250, 300; PN10, PN16, PN25, PN40.
  • Temperature Range: Standard: -20°C to 120°C (-4°F to 248°F) with elastomer seats. Extended ranges available with different seat/trim materials.
  • End Connection: RF, RTJ, or Wafer/Lug per ASME B16.5 / B16.47.
  • Operation: Fully automatic, non-slam operation. Optional external dampers, springs, or manual assist mechanisms for specific closing characteristics.
Size Range (NPS / DN) Approximate Cv Value* Max Allowable Pressure Drop for Non-Slam Operation Typical Applications
2" - 12" (DN50 - DN300) 450 - 12,000 1.0 - 1.5 psi (0.07 - 0.1 bar) Pump discharge, Cooling water systems, General service lines
14" - 24" (DN350 - DN600) 15,000 - 45,000 0.5 - 1.0 psi (0.03 - 0.07 bar) Main water transmission, Large intake/discharge lines, Power plant condensers
26" - 48" (DN650 - DN1200) 50,000 - 150,000+ Consult Factory Municipal water & wastewater, Large-scale irrigation, Offshore & marine systems

*Cv values are indicative and vary based on specific design, size, and trim. Consult engineering data sheets for precise figures.

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