LN81W / 82 series bellows single-seat control valve, based on LN81/82 series valve single-seat non pressure balance structure on the basis of increase the bellows seal structure, compression elastic stainless steel bellows in bearing parts connected to the valve stem in 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. bellows single-seat control valve TECHNICAL PARAMETERS Nominal Size DN15 ~ DN300 Pressure Rating PN16/25/40/63/100;CL150(PN20)/300(PN50)/600(PN110) Operateing Temperature -46â??~ 350â?? Characteristics Equal percentage, linear, quickly open Rangeability 30:1ã??50:1ã?? 100:1 Seat Leakage Class ANSI B16.104: IVã??Vã??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. Single seated globe valve manufacturer:Zhejiang SUPCON Fluid Technology Co., Ltd.