Cryogenic Check Valve is used in the management system of cryogenic liquid storage and transportation equipment to prevent the backflow of cryogenic medium.
1. Valve Size : 2 ~ 36”
2. Applicable Rating : ASME 150# ~ 600#
3. Temperature : Down to -196 ℃
4. Code & Standard : BS, ASME, ASTM
Designed by BS6364, ASME B16.34, and ASME B16.25/16.5
5. Shell & Seat Leak Test : API 598 & BS6364
6. Constructions：
End Connection : Flanged, Butt-Welded or RTJ Type
Full Bore /Reduce Bore
1.Low fluid resistance.
2.Can be installed horizontally and vertically.
3.Cryogenic temperature liquid nitrogen pretreatment of parts.
4.Bolted bonnet, welded bonnet, pressure self-tightening bonnet.
| PARTS NAME | MATERIAL |
| BODY | Cast Steel – ASTM A351-CF8(M)/CF3(M) |
| BONNET | Cast Steel – ASTM A351-CF8(M)/CF3(M) |
| SEAT | SOFT: PCTFE METAL: ASTM A276-304(L) / 316(L)-(H.F) |
| DISK | ASTM A351-CF8(M) / CF3(M), A276-304(L) / 316(L)-(H.F) |
| GASKET | SPIRAL WOUND GRAPHITE |
All metal parts are subjected to more than two deep cold treatments before finishing;
All extended valve stems (except check valves) are made of high-performance XM-19 or Inconel718 alloy materials;
All spheres are hardened and precision ground, with a surface accuracy of more than 0.2um;
All lip-seal seals are from international first-line brands;
All sealing surfaces that match the lip-seal are polished with precision technology to achieve a surface accuracy of more than 0.2um;
All "TEJI" brand cryogenic valves are tested for normal temperature and low temperature performance according to international industry standards before leaving the factory, and are shipped only after they pass the test;
All seals of the extended stem packing parts adopt a unique combined structure, which can not only ensure long-term sealing performance, but also reduce the switching torque;
All valves below -101℃ (except check valves) are equipped with cooling plates to effectively ensure that the temperature at the bottom of the packing is above 0℃; at the same time, it can effectively prevent condensed water from freezing on the valve body.
IMPROVEMENTS:
Anfeng Industrial Zone, Oubei Town, Yongjia County, Zhejiang Province
+86-0577-57799998
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