- Composite Round Flap Valve (JY-GRP-Y-4-0.25-DN500)
- 2016-10-24 00:52
- The main performance parameters:1. Material: GRP BMC HDPE Cr13 Q2352. Temperature: -20_60 (requirements under the maximu
- composite FRP round flap gate valve
- 2016-10-23 07:49
- Flap valve / Check valve / flap gate Flap valve which depends on its gravity and pressure difference inside and outside