Dual-disc check valves are bonnetless and mounted between pipe flanges (wafer style). The valve includes two spring loaded half-moon shaped discs that rotate about their shaft. It can be installed on horizontal and vertical pipelines. FYV’s wafer check valves are designed to provide long service life and responds quickly to flow stoppage or reversal.

Technical specification
Design & manufacturing standard as per API 6D/API 594
Face to face standard as per API 6D/ASME B16.10
Fanged ends standard as per ASME B16.5/ASME B 16.47
Testing & inspection standard as per API598/API 6D

Product Range
Body material: Carbon steel, Stainless steel, Alloy steel ,Monel, Duplex, Inconel
Size range(s):1/2"～48"
Pressure rating: Class150～Class 2500
End connection: RF, RTJ
Working temperature:-196℃～+560℃

Design Features
Compact and reasonable product structure, reliable tightness and good performance;
One Piece Body Design , Short Face-to-face, Small volume and light weight;
Rapid closing and flexible actions of the valve clack
Small closing impact, water hammer is not liable to be generated;
Smooth fluid passageway and small fluid resistance;
Spring-loaded Disc for Quick Closure