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.
A bellows globe valve is a type of industrial valve used for controlling the flow of fluids within pipelines. It is designed with a bellows element, which is a flexible, corrugated, or convoluted tube often made of metal, to enhance the sealing and performance of the valve.
Each bellows assembly is helium leak tested to ensure zero leakage.
Non-rotating stem prevents bellows twisting.
Flexible metal bellows replaces the function of a conventional gland, reducing maintenance frequency and operating costs.
Threaded fittings and hermetically welded fittings replace flanged fittings to ensure zero leakage (the valve is thus hermetically sealed).
Vacuum brazed valve body seats are replaced. conventional threaded seats, thereby eliminating potential leakage paths and reducing maintenance.
|Nominal Size||DN15 ~ DN300|
|Operateing Temperature||-46℃~ 350℃|
|Characteristics||Equal percentage, linear, quickly open|
|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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