Tilting Disc Check Valve

Tilting Disc Check Valve: Precision Flow Management for Critical Systems

The tilting disc check valve stands as a cornerstone in modern pipeline engineering, delivering dependable unidirectional flow with minimal pressure loss. Designed around a pivoting disc mechanism, it responds instantly to flow cessation, slamming shut before reverse flow can establish. This inherent quick-closing action mitigates water hammer, protecting pumps, compressors, and sensitive instrumentation. Our range includes two primary configurations tailored to diverse installation demands: the space-efficient Wafer tilting type check valve that sandwiches directly between mating flanges, ideal for tight layouts and lightweight piping, and the heavy-duty Flanged tilting disc check valve with integral flanges, offering superior sealing integrity for high-pressure, high-temperature, or large-diameter services. Both variants leverage a streamlined flow path and a low-inertia disc to achieve cracking pressures as low as 0.5 psi (0.034 bar), making them a premier choice for HVAC, water treatment, oil & gas, and chemical processing sectors where backflow prevention and energy efficiency are paramount.

The Tilting Disc Check Valve operates through a carefully balanced disc that rotates on a shaft positioned above the seat centerline. This geometry ensures that even at extremely low flow velocities, the disc lifts smoothly, offering full-area flow with minimal turbulence. Upon flow stoppage or reversal, gravity and reverse flow combine to force the disc against the seat instantly, achieving bubble-tight shutoff. The valve’s short face-to-face dimension simplifies retrofitting into existing piping, while the top-entry design in many sizes permits in-line maintenance without removing the valve body. Enhanced with replaceable seat rings and a shaft sealing arrangement that prevents external leakage, the Tilting Disc Check Valve is engineered for decades of trouble-free operation. Typical applications include pump discharge lines, cooling water circuits, steam condensate return, and compressed air systems where silent, non-slam performance directly impacts system reliability and total ownership costs.

Design Features at a Glance

• Low-inertia tilting disc for rapid, non-slam closure and water hammer elimination
• Full-ported body minimizes pressure drop across the valve
• Two basic body styles: wafer (compact, lightweight) and flanged (rigid connection)
• Shaft positioned above seat centerline, enabling gravity-assisted sealing
• Metal or resilient seated options for temperatures from -196°C to +550°C
• Replaceable seat rings and accessible disc/shaft assembly for simplified maintenance
• Short face-to-face dimensions per API 594 and ASME B16.10
• Bi-directional tightness possible with optional soft seat inserts
• Available with counterweight or spring-assist for special flow conditions
• Corrosion-resistant materials: stainless steel, duplex, super duplex, Hastelloy, titanium, and more

Standard Technical Specifications

Typical Materials of Construction

Performance Data and Cv Values (Example – Wafer Type, 150 Class)