Double Disc Wafer Type Swing Check Valve

When high quality and reliable valves are needed, JOEPAI ® The Double Disc Wafer Type Swing Check Valve can be used for various applications in the oil and gas and petrochemical industries.

Our Double Disc Wafer Check Valve is an energy-saving solution engineered for superior backflow prevention in pipeline systems. Incorporating advanced design principles and manufactured in compliance with major international standards, this valve guarantees exceptional sealing performance, high safety, reliability, and minimal flow resistance.It is the ideal choice for a vast array of applications across industries including petrochemical, water supply & drainage, food processing, pharmaceutical, metallurgy, power generation, and light industry. Its primary function is to automatically allow forward flow and prevent reverse flow (backflow) in one-directional fluid systems, protecting critical equipment and ensuring system integrity.

Key Features

Compact and Lightweight Design:The wafer-style body is small, lightweight, and requires minimal space. It installs conveniently between ANSI flanges, significantly reducing weight and system costs compared to lug or flanged-end valves.

Rapid, Automatic Closure:Two independent torsion springs act on each of the two hinged discs, ensuring swift and automatic closure the instant flow velocity drops to zero, effectively preventing flow reversal.

Eliminates Water Hammer:The quick-closing action drastically reduces the risk of sudden pressure surges (water hammer), safeguarding pumps, pipes, and other system components from potential damage.

Short Face-to-Face Dimension:Its compact length provides superior rigidity and structural strength on the pipeline, making it exceptionally easy to install and align.

Versatile Installation:Offers flexible mounting options and can be installed in both horizontal and vertical pipelines without any modifications, providing great adaptability to your system layout.

Bubble-Tight Seal:Engineered for zero leakage. The precision-machined discs and seals ensure a bubble-tight shut-off, as verified under rigorous hydrostatic pressure tests.

Safe and Reliable Operation:Constructed from high-quality materials and designed for durability, this valve delivers safe, reliable, and maintenance-free operation with high resistance to common system interferences.

Standards

Design&Manufacture: API 594, API6D, JB/TB937

Face to face: API594, DIN3202, JB/T8937

Pressre-Temperature: ASME B16.34, DIN2401, GB/T9124

Main Parts & Material

Dimensions 

PN1.6Mpa