Flow control valve is a hydraulic automatic valve with pilot operated and adjustable flow rate. By adjusting the pilot valve to control the opening of the main valve
○ Nominal diameter: DN50-DN600
○ Nominal pressure: PN10 – PN25
○ Applicable media: Non corrosive liquids such as clean water, circulating cooling water, and fire water
○ Operating temperature: 0 ° C to+120 ° C
○ Connection method: flange connection
○ Valve body material: ductile iron, cast steel, stainless steel
○ Diaphragm/sealing material: NBR, EPDM, Viton
○ Control mode: Pilot operated hydraulic self operated control, no external power or air source required
○ Flow setting range: Depending on the caliber, the adjustable range is 5-5000 m ³/h
○ Control accuracy: ± 5% (under stable operating conditions at the set flow point)
○ Response characteristics: automatic sensing of pressure difference changes, dynamic adjustment of opening to maintain constant flow rate
○ Installation requirements:
Valve front straight pipe section ≥ 5D, valve rear ≥ 3D (ensuring measurement accuracy)
It is necessary to install a Y-shaped filter (mesh size ≥ 40) upstream as a matching device
Horizontal or vertical installation (valve cover facing upwards), not inverted
○ Multi functional valve with high-precision pilot controlled flow
○ Suitable for pipelines that require control of flow and pressure in water distribution pipes, maintaining the predetermined flow rate unchanged
○ Limit excessive flow to a predetermined value and lower the upstream high pressure appropriately
○ Even if the pressure upstream of the main valve changes, it will not affect the flow downstream of the main valve
○ Utilize relevant pilot valves to minimize energy loss during throttling process
In case of emergency, the flow control valve can completely cut off the flow to avoid losses
○ High control sensitivity, safe and reliable, easy debugging, long service life
○ Measurement and flow restriction control nodes for municipal water supply network zoning
○ Balanced distribution points for cold and hot water flow in each floor branch of high-rise buildings
○ HVAC system terminal equipment prevents overcurrent and ensures hydraulic balance
○ User end constant flow protection device for industrial circulating cooling water system
○ Implement total flow restriction and stable operation at the outlet of the secondary water supply pump station
The low resistance backflow preventer integrates multiple functions. In addition to ultra-low resistance and more reliable safety performance
The remote control float valve controls the opening and closing of the main valve through the remote float level signal, achieving automatic water inlet and stable liquid level
It can be used as a pressure holding valve or a pressure relief valve. When the set pressure is exceeded, the relief valve becomes a path with low resistance