Water Control Valve
Hydraulic control valve is the valve controlled by water pressure. The hydraulic control valve is composed of a main valve and its attached conduit, pilot valve, needle valve, ball valve and pressure gauge. According to different purposes, functions and places, it can be developed into remote control float valve, pressure reducing valve, slow closing check valve, flow control valve, pressure relief valve.
Installation of water control valve
When installed horizontally, the valve cover should be upward. There shall be drainage facilities behind the pressure reducing valve of the fire water supply system. When the pressure of the automatic sprinkler system needs to be reduced, the pressure reducing valve shall be set in front of the alarm valve (along the water flow direction). The pressure reducing valve matched with a single alarm valve may not be used for the equipment; The pressure reducing valve matched with multiple alarm valves shall be the plant pressure reducing valve of the equipment. Pressure reducing valves for hot water supply works shall be hot water type.
Material of main parts
» Valve body: cast iron, cast steel, stainless steel
» Sealing ring: nitrile rubber
» Valve plate: ductile iron, cast steel
» Bonnet: cast iron, cast steel, stainless steel
» Guide sleeve: ductile iron, brass
» Diaphragm: nitrile rubber
» Stem: stainless steel
» Compression spring: stainless steel