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： API 600；API 602; BS 6364；ASME B16.34；MESC SPE 77/200；MSS SP-134； JB/T 12626

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 therequirements of the specifications, to ensure valve parts can fully undertemperature change and cause inflation, contraction ,and the structure of seatpart will not have permanent deformation due to the temperature change

Using long neck bonnet structure that canprotect the stuffing box

No matter how the temperature change it canmaintain the disc reliable seal, expanding and flexible wedge available

Back seal seat cobalt chromium tungsten carbidesurfacing welding structure, to avoid the stainless steel material scuffing eachother

Cobalt chromium tungsten carbide overlayingwelding structure of the seat and gate sealing surfaces

Pressure relief hole structure design to preventvalve cavity abnormal pressure change, pressure relief hole can be positionedto seat or gate considering of valve structure , and connected with valve inletend

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

Main components parts combination

Note: Material isavailable upon request

Product Range

Nominal Diameter：1/2" ~48"(DN15~1200)

Pressure Range：ANSI/ASME150Lb~1500Lb(PN16~250Mpa)

Suitable Temperature：-196~150 ℃

Operation ：Manual, Gear Box, Electric, Pneumatic