Swing the insulation check pneumatic valve working principle, implement standard

the insulation check working principle of the pneumatic valve BHH/W:
swing insulation check the function of the pneumatic valve is used to prevent the backflow medium pipeline. BHH insulation check pneumatic valve opening and closing a/W by medium flow to open or closed. Only in the one-way flow of medium on the pipeline, prevent medium return, in case of an accident. Jacketed swing insulation check pneumatic valve is mainly used in petroleum, chemical, metallurgical, pharmaceutical and other kinds of systems, in order to transport under normal temperature solidification of high viscosity medium. This series of thermal insulation of pneumatic valve between the two flanges of set of welding in the pneumatic valve, pneumatic valve, the side of the connection Settings are at the bottom of the jacket. In the jacket can be freely through the steam or other heat insulation medium, to ensure that the viscous medium can be smoothly through the pneumatic valve.
swing insulation check pneumatic valve type:
cast steel: BHH - C、BHH- C、BHH- C、BHH- C
stainless steel: BHW - P, BHW - P, BHW - P, BHW - P
BHW - R, BHW - R, BHW - R, BHW - R
: American standard BHH - 磅,BHH - 磅,BHH - LB
jacket insulation check pneumatic valve BHH/W standards:
design specification: GB/T structure length:

connecting flange: GB/T, JB/T HG, GB, ANSI,
the test and inspection: JB/T, GB/T
- pressure Temperature: GB/T
product identification: GB/T
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