จำหน่ายวาล์ว Pressure Sustaining & Relief Control Valve
Fire protection valve - FDV-DP series - Raphael Valves Industries - diaphragm / pneumatically-operated / control
Source Raphael-style GRP=PA66+GF30 or UPVC Electrically-activated Pressure Reducing Valves for Irrigation Control from 1-1/2" to 6-INCH on m.alibaba.com
จำหน่ายวาล์ว RAPHAEL - Pressure Reducing Control Valve Type RAF 60