A21H spring micro opening safety valve
A21H type micro opening safety valveSuitable for the work temperature are less than 200 of the air, ammonia, oil gas and other media equipment and pipeline;
A21W type micro opening safety valveFor the equipment and piping of gas or liquid in the working temperature are less than 200 of the corrosive;
A21F type micro opening safety valveSuitable for the work temperature are less than 200 of the liquefied gas, oil gas and other equipment and pipeline, as the overpressure protection device.
When the pressure in the equipment and piping exceeds the allowable value, the valve opens automatically, and then the total amount is discharged;
When the pressure is reduced to the specified value, the valve is automatically closed to ensure the safe operation of the equipment and pipeline.
Micro starting safety valveIs a safety valve, its opening and closing parts under the action of external force in a normally closed state, when the device or the medium pressure inside the pipe increases, exceeds the set value automatically open, through the medium outside the system to prevent discharge piping or equipment in the medium pressure exceeds the set value. From the start type safety valve, micro open type safety valve opening stroke: height is less than or equal to 0.05d0 (minimum discharge throat diameter)
thisSafety valveIt is suitable for urban construction, chemical industry, metallurgy, petroleum, pharmacy, food, beverage and environmental protection
Main connection size
|Model||Nominal diameter (DN)||do||d||Do||M||d1||D1||L||L1||H|| |