Bellows single-seat control valve, based on pressure balance structure of bellows seal structure, the pressure of the elastic in bearing parts and stainless steel bellows valve stem connected together, and packing of double seal, eliminate medium leakage hidden trouble. Suitable for differential pressure is highly toxic, flammable, explosive, volatile and the adjustment of the rare and precious metal medium.
TECHNICAL PARAMETERS
Nominal Size | DN40 ~ DN300 |
Pressure Rating | PN16/25/40/63/100;CL150(PN20)/300(PN50)/600(PN110) |
Operateing Temperature | -46℃~ 350℃ |
Characteristics | Equal percentage, linear, quickly open |
Rangeability | 50:1 |
Seat Leakage Class | ANSI B16.104: IV、V、VI |
Body Material | WCB/WCC/LCB/LCC;WC6/WC9;CF8/CF8M;4A/5A etc. |
Trim Material | 630/316/316+ST/316nitriding/316+Ni60/316+WC etc. |
Seal Material | PTFE+ graphite v-shaped packing, flexible graphite ring packing, graphite +PTFE braided packing etc. |
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