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API Side Entry Cast Steel Trunnion Mounted Ball Valve

API Side Entry Cast Steel Trunnion Mounted Ball Valve

    The SV API side entry cast steel trunnion mounted ball valve has a trunnion mounted ball supported by two floating seats.

    The two floating seats are movable and self-tightening with spring loaded under the seats.

    The pressure of media will push the two floating seats seal ring at both ends to attach the ball’s surface tightly to ensure bidirectional reliable sealing.

    The pressure of media from ball is all transferred to the bearings not to the seats. The SV cast steel trunnion mounted ball valve is suitable for large size and high pressure working condition.

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  • Features
  • Specification

  • The SV high pressure cast steel trunnion mounted ball valve has trunnion ball supported by upper and lower bearing to reduce the friction between ball and seat so that the operate torque is small for easy operation;
  • Spring loaded seat is self-tightening to ensure reliable tight seal;
  • Cavity pressure self relief when spring loaded single piston effect seat structure;
  • Double block and bleed for residue discharge and pressure relief;
  • Emergency sealant injection valve as subsidiary sealing device;
  • The SV split body cast steel trunnion mounted ball valve can be divided into two piece split body and three piece split body;
  • The two piece and three piece body is connected by bolts and nuts;
  • Soft seal structure and metal to metal seal structure;
  • Designed according to API or DIN standards;
  • Full bore and reduced bore structure;
  • Optional extended stem or extended bonnet;
  • Optional bare stem with ISO 5211 top flange;
  • Fire safe, anti-static and anti-blowout stem design.

Reduced bore trunnion mounted ball valveselectric trunnion mounted ball valvesThree pieces body trunnion mounted ball valves

Product range:

  • Size: 2"56" (DN501400)
  • Pressure rating: Class 1502500 (PN16PN420)
  • End connection: RF, RTJ, BW
  • Body materials: Carbon steel WCB/1.0619, Low temperature steel LCB/1.1156, Stainless steel CF8/1.4308, CF3/1.4306, CF8M/1.4408, CF3M/1.4404, CF8C/1.4552, Duplex stainless steel UNS S31803/2205/4A, UNS S32207; N08094/1.4539 etc.
  • Ball materials: A105+ENP, F304, F316, F304L, F316L, F51, F53, F55, 904L etc.;
  • Seat materials: PTFE, RPTFE, NYLON, DEVLON, PEEK, PPL, FKM or metal to metal seal etc.
  • Operation: Bare stem, wrench, gear, electric, pneumatic, electro-hydraulic, gas over oil actuator

Technical standards:

  • Design: API6D, ASME B16.34, DIN 3357-1EN12516-1
  • Face to Face: ASME B16.10, DIN 3202F1/F4/F5/F17/F18
  • BW ends: ASME B16.25, ASME B31.8, EN12627
  • Flanged ends: ASME B16.5, ASME B16.47, EN1092
  • Wall thickness: ASME B16.34
  • Fireproof test: API 607, API 6FA
  • Test and inspection: API 598, API 6D, DIN3230/3,EN12266
  • Pressure and temperature rating: ASME B16.34