As one of the leading resilient seated check valves manufacturers and suppliers in China and equipped with a productive factory,Website: , Shanghai Hugo Valve Co.,Ltd is always at your service.Resilient seated check valves Description1. Resilient seat check valves be composed with body, bonnet and rubber disc.2. The Rubber disc of resilient seat check valves be made of steel plate and lined with nylon, the disc's working life can reach 1 million times.3. Rubber lined swing check valves adopted full flow area design, have small water head loss, not easy to accumulate impurities, convenient for maintenance.4. Resilient disc check valves is suitable for water supply and drainage system with horizontal installation, can be installed at the exit of pump to avoid loss caused by the medium flow back and water hammer.5. Resilient hinge check valves is suitable for the medium which is clear, for other solid medium and it's viscosity is high, the resilient seat check valves is not suitable. valves materials of constructionBody Materials: Cast Iron, Ductile IronBonent Materials: Cast Iron, Ductile IronDisc Materials: steel + NBR / NylonApplicable standard Size Range: 2''~24''(DN50~DN600)Pressure: PN10, PN16,Class 150, JIS 10KStandard : ANSI, DIN, JIS End Connection: FlangeOperate: Automatic