The Cryogenic Top-Entry Ball Valve, as an important on/off component in the cryogenic pipeline system, is an important part of the petrochemical industry, air separation, and natural gas industry.
1. Valve Size : 1/2” ~ 20” (Cast Steel) / 1/2” ~ 36” (Forged)
2. Applicable Rating : ASME 150# ~ 1500#
3. Temperature : Down to -196 ℃
4. Code & Standard : API, BS, ASME, ASTM
Designed by BS5351, ASME B16.34, and ASME B16.25/16.5
5. Shell & Seat Leak Test : API 598 & BS6364
6. Constructions：
End Connection : Socket-Welded, Butt-Welded or Flanged Type
Long Extended Bonnet
Trunnion Ball,Floating Ball, Full Bore / Reduce Bore
Fire Safety Construction(Certified by TÜV)
Manual or Motor Operated (Pneumatic, Electric, or Hydraulic)
Uni- / Bi-Direction, Double Block & Bleed Design
1. The structure of Top-Entry Ball Valve enables online valve maintenance.
2. Extended bonnet design.
3.Design of live-loaded seal structure of valve stem.
4.Special design of valve seat assembly, reliable sealing, detachable valve seat structure.
5.Valve cavity overpressure relief design.
6.Stem anti-settling design.
7.The extended bonnet has a drip tray design, which can effectively prevent condensate from flowing into the insulation layer.
8.Fire-resistant, anti-static, anti-stem ejection function.
| 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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