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 micro resistance slow closing check valve adopts a double flap slow closing and streamlined flow channel design, with low resistance and smooth closing
The low resistance backflow preventer integrates multiple functions. In addition to ultra-low resistance and more reliable safety performance
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