This ball valve can provide faster opening and closing movement and is suitable for storage tank applications as well as cryogenic pumps, pipelines or low-pressure trailers where leakage is “zero”.
1. Valve Size : 1/2” ~ 36” (Cast Steel) / 1/2” ~ 48” (Forged)
2. Applicable Rating : ASME 150# ~ 1500#
3. Temperature : Down to -196 ℃
4. Code & Standard : API, BS, ASME, ASTM
5. Constructions：
End Connection : Socket-Welded, Butt-Welded or Flanged Type
Long Extended Bonnet
Fire Safety Construction(Certified by TÜV)
Manual or Motor Operated (Pneumatic, Electric, or Hydraulic)
1.All valve parts whose service temperature is less than -100°C shall be cryogenically treated in accordance with relevant regulations to prevent low-temperature brittleness of the material and volume change caused by phase change of the material at cryogenic temperature.
2.The long neck structure is adopted to make the packing work temperature above 0℃, effectively preventing the packing from reducing the sealing performance or even sealing failure due to the low working temperature, and it is convenient to wrap the valve with insulation material to prevent the loss of cold energy.
3.The floating ball valve adopts the inlet pressure relief outlet seal design, which effectively prevents the abnormal pressure rise in the middle cavity caused by temperature changes, and ensures the safe operation of the valve and pipeline.
| PARTS NAME | MATERIAL |
| BODY | Forged Steel – ASTM A182-F304(L)/F316(L) / Cast Steel – ASTM A351-CF8(M)/CF3(M) |
| BONNET | Forged Steel – ASTM A182-F304(L)/F316(L) / Cast Steel – ASTM A351-CF8(M)/CF3(M) |
| SEAT | PCTFE / GRAPHITE |
| BALL | ASTM A276-304(L) / 316(L)-(H.F) |
| STEM | ASTM A276-304(L) / 316(L) |
| GASKET | SPIRAL WOUND GRAPHITE |
| GLAND PACKING | 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.
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