FREE-VALVE’s spring full bore external thread type with lever safety valves (A28 type) are used for the
equipment and pipeline of the air, N2, H2 mixed gas vapour etc . Medium that the working temperature are less than 200 °C.Take for extra pressure protection device .
1.Simple structure, good sealing performance, accurate opening pressure, re-seating pressure difference is small, easy adjustment, etc.
2. The seat is a Valenozzle-type, the speed of sound is reached when steam flows through the seat outlet, discharge coefficient is large.The seat sealing surface weld tungsten carbide alloy, wear resistance, long life.
3. For the safety valve with a lever, it can be opened manually with the lever when the medium’s pressure is up to over 75% of that at which the valve opens.
4.Adjusting the adjustment nut, adjust the spring compression, the valve can be very convenient, very quickly to obtain accurate adjustment pressure.
5.Full bore type safety valve, the height of the lift is more than the 1/4time of flow diameter with large amount of discharge, the height of opening for a low-lift safety valve 1/20-1/40 time the flow diameter.
1)Size Range: DN15~DN25
2)Pressure Range: PN10
3)Connection Type: External thread
5) Pressure test:GB/T12243
6) Design standard: GB/T12241, GB/T12243
7) Service temperature:-20°C to 200°C
FREE-VALVE’s spring full bore external thread type with lever safety valves
are used for steam boiler system, such as high pressure supply watering heating and heater exchange.
Contact Name: Doris Wang
Company Name: Zhengzhou Free Fluid Control Technology Co., Ltd
Street Address: No.76 Cuizhu Road,
High-tech Development Zone,
Zhengzhou City, Henan, China
Other Contact Info:
Wechat Id: Free_valve
Member name: ZhengZhouFreeFluidControl
Member Since: 14 October 2020
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Business focus: Valve, Gate Valve, Ball Valve, Globe Valve
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