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      Welcome to Zigong Weite Valve Mfg Co.,Ltd!

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      Forged Steel Trunnion Mounted Ball Valve

      Forged Steel Trunnion Mounted Ball Valve

      • Design standardAPI6D、ASME B16.34、BS5351、ISO17292、DINConnection endsRF、RTJ flange、butt-welded、thread、socket weldedOperationManual、Pneumatic、Electric、Gas-liquid interaction etc.?Nominal diameter2" – 48" (DN ...
      Products Conten

      Design standard

      API6D、ASME B16.34、BS5351、ISO17292、DIN

      Connection ends

      RF、RTJ flange、butt-welded、thread、socket welded

      Operation

      Manual、Pneumatic、Electric、Gas-liquid interaction etc. 

      Nominal diameter

      2" – 48" (DN 50-DN 1200)

      Pressure range

      CLASS 150 – CLASS 900 (Mpa 1.6- Mpa 15.0)

      Materials

      carbon steel、stainless steel、20#steel 、Nickel alloy、Cobalt alloy

      Temperature

      -196℃-540℃

      Application

      Petroleum、Natural gas、Chemical、petrochemical、Power station、Metallurgy、Papermaking etc. 


      Part

      CS. Series

      Sulfur-proof Series

      SS.   Series

      LCB, LCC Series

      Body

      A105

      A105

      F304, F304L

      F316, F316L

      LF2, LF1

      Ball

      A105+ENP/HCr,

      F6a+HCr

      A105+ENP,

      F6a+ENP

      F304, F304L+HCr

      F316, F316L+HCr

      F304+HCr

      Stem

      A105+ENP,

      A182 F6a

      A105+ENP,

      4140+ENP

      F304, F304L

      F316, F316L

      F304

      Gland

      A105+ENP

      A105+ENP

      F304, F304L

      F316, F316L

      F304

      Seat retainer

      A105+ENP,

      F304/F316

      A105+ENP,

      F304/F316

      F304, F304L

      F316, F316L

      F304

      Seat

      PTFE/RPTFE(Standard),   NYLON(High Pressure), PPL(High Temperature), PEEK, EPDM, VITON,DEVLON

      Packing

      PTFE, PPL, GRAPHITE

      Gasket

      PTFE, PPL, GRAPHITE

      Bearing

      PTFE, PPL

      Stud

      A193-B7

      A193-B7M

      A193-B8/B8M

      A193-B8/B8M

      A320-L7/L7M

      Nut

      A194-2H

      A194-2HM

      A194-8/8M

      A194-8/8M

      A194-7/7M


      General Features

      Trunnion mounted ball valve, regular pattern, full bore or reduce bore, side entry type, split body (3-piece body), bolted body, forged steel, solid ball, double block & bleed, fireproof design, antistatic device, blow out proof system, double seal design with high integrity shut-off, field repairable


      Upstream Seal Two-way Valve

      Fixed ball valve uses advanced spring preload floating valve seat assembly. The design mechanism of upstream seal can ensure good seal in low pressure, high pressure, vacuum. Each valve has two seats and both sides can be sealed, so no direction restriction when installing, both ends can be upstream end for it is a two-way valve.
      Double Block Drain Valve
      When fixed ball valve is in the fully closed, the fluid will be completely blocked by the upstream and downstream seat, so the medium and dirt in the central cavity can be discharged. this can reduce dirt damage on the valve sealing surface so as to prolong the valve life.
      Compound Seal
      when medium flowing inside valve includes solid particle and slurry, customers can choose our proper compound seal which divides into soft material seal and metal to metal seal, the main seal uses soft material , secondary seal uses the other one. So that the metal to metal seal can brush   away solid particle and slurry attached to valve body surface in order to not affect soft seal seat, meanwhile soft seal seat is made of wearable rubber , even if some part solid particle and slurry attach on soft seal seat, it also can resist slurry abrasion. this seal type can ensure no leaking and prolong valve life time.
      Self-relieving Central Cavity
      The fixed ball valve uses spring preload valve seat, when the pressure of stagnant medium in the cavity rise up abnormally, the spring will be compressed then release pressure automatically.
      Full Bore and Reducing Bore
      We supply full sizes or diameter shrinkage structure according to applications. Full bore valve flow aperture is consistent with the pipeline diameter so can clean it easily.
      Fireproof Design
      In the case of accidental fire or abnormal temperature rise that cause non-metal seat softened and damaged, under the action of spring load effect,  special designed seat support metal sealing surface and ball sphere will form metal-to-metal connection which makes a momentary sealing effect. it complies API6FA and API607 standard.When valve seat and valve stem seal system are damaged, you can inject sealing grease through injection valve for temporarily sealing.
      Stem Sealing System
      we use the two orings inside and outside the stem for sealing, which produces reliable performance
      Extended Stem
      According to installation and operation requirement, the valve stem can be lengthened. The ball valve with extended stem is particularly suitable for city gas pipeline buried-laying. Extended size according to customers' requirement.
      Neatly Operation
      Using the TEFLON valve seat and stem bearing with small friction coefficient and good self lubrication can greatly reduce the valve operating torque. Therefore, even if in the case of no grease, the valve operation is also very flexible.



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