Red paperboard gasket material used in safety valves?
The safety valve of the gasket can not be generalized, it depends on the value of pressure, equipment material, nominal diameter, interface to determine the type of gasket, with the inner and outer ring, inner ring, winding and so on, materials are Q235A, 0Cr18Ni9, 304 stainless steel, aluminum and copper pad, pad and so on, clear score in order to determineThe general temperature is not high is the rubber O ring high temperature aluminum pad copper pad (such as engine cylinder mattress is copper, the gaskets are dedicated only once, after apart to be replaced, because has been squashed) and paper pad (commonly known as the asbestos paper)
Set the safety valve, we should pay attention to the following points:(1) when gas, liquid and two-phase materials are in the container, the safety valve shall be installed in the gas phase.(2) when the safety valve is used for discharging flammable liquid, the exit of the safety valve shall be connected with the accident storage tank. When the discharged material is a high temperature combustible material, the receiving container shall have corresponding protective facilities.(3) general safety valve can be emptied in place, the vent should be 1 meters higher than the operator (m) or more, and should not be toward 15 meters (m) within the open fire place, emitting sparks and high temperature equipment. Indoor equipment, safety valve for emptying the container mouth should lead to the roof and the roof higher than 2 meters (more than m).(4) when the safety valve entrance cut off valve, cut off valve is normally open state, and to be sealed, to avoid mistakes.
The safety valve is opening and closing parts under the action of external force in a normally closed state, when the medium pressure equipment or pipeline increase exceeds the set value, the medium outside the system to prevent discharge within the medium pressure piping or equipment exceeds the special valve value. Safety valve is an automatic valve, mainly used in boilers, pressure vessels and pipes, control pressure is not more than the required value, and plays an important role in the protection of personal safety and equipment operation. The relief valve must be subjected to pressure test before use.
Safety valve used in red paperboard gasket material can not be generalized, it is necessary to determine the material used in accordance with the material, the gasket materials are generally Q235A, 0Cr18Ni9, 304 stainless steel, as well as copper pad, aluminum pad and so on.
