Products Introduction
The valves which operated below -40℃ usually callcryogenic valves. It mainly used in ethylene, liquefied natural gas plants,natural gas LPG, LNG storage tanks, receiving bases and satellite stations,empty Sub-equipment, petrochemical tail gas separation equipment, liquidoxygen, liquid hydrogen, liquid nitrogen, liquid argon, carbon dioxide lowtemperature storage tank and tank truck, pressure swing adsorption oxygensystem.
Design Specification
Design&Manufacture： ASME B16.34；API 602；GB/T 12235；BS 1873；BS 6364；MESC SPE 77/200；MSS SP-134；JB/T 12624
End to End：ASMEB16.10；GB/T 12221
Connection：ASME B16.5；ASME B16.25；HG；GB；JB；JIS；EN；DIN
Inspection & Test：API 598/BS 6364；MESC SPE 77/200；MSS SP-134；JB/T 12622
Product Features
Valve components parts that contacted with themedia before deep process must be strict cryogenic treatment according to therequirement of the specifications, to ensure valve parts can fully undertemperature change and cause inflation ,contraction ,and the structure of seat partwill not have permanent deformation due to the temperature change
Using the long neck bonnet structure that canprotect the stuffing box
No matter how the temperature change it canmaintain the disc reliable seal, globe valve use cone disc
Back seal seat cobalt chromium tungsten carbidesurfacing welding structure, to avoid the stainless steel material Scuffingeach other
Cobalt chromium tungsten carbide overlayingwelding structure of the seat and gate sealing surfaces
The flow direction of medium is lower end ininlet and higher end in outlet higher( inflow from the disc lower end);Stem surface nitriding hardening process, toprevent valve in the process of opening and closing surface scratches affectthe sealing performance
Packing chooses fugitive emission packing onrequest, ensuring valve packing place leakage to meet environment requirements
Welded nipples is available on request;Insulation board (drop water board) is availableon request
Low leakage can be chosen upon request, detailtechnical requirements please refer to the low leakage sample.
Material
Body | Disc | Seat | Stem |
A182 F304/F304L A351 CF3 A350 LF2;A352 LCB A350 LF3;A352 LCC A182 F316/F316L A351 CF3M | A182 F316/F304+HF | A182 F316/F304+HF | A182 F304 A182 F316 17-4PH UNS 20910 |
Note: Material can be chosen upon request.
Products Range
Nominal Diameter：1/2"~16"(DN15~400)
Pressure Range：ANSI/ASME150Lb~1500Lb(PN1.6~25.0Mpa)
Suitable Temperature：-29~-196 ℃
Operation：Manual ,Gear, Electric,Pneumatic
Products Range
Nominal Diameter：1/2"~36"(DN15~900)
Pressure Range：ANSI/ASME150Lb~1500Lb(PN16~250Mpa)
Suitable Temperature：-196~150 ℃
Operation：Manual ,Gear, Electric,Pneumatic
URL : http://rhqywdz.cn
Tel : 021-67226688
Contact : Mr Cai
Contact address : No. 855, Yuegong Road, Jinshan Industrial Zone, Shanghai
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