Electric Carbon Steel Flange Pneumatic-Hydraulic Trunnion Mounted Ball Valve

Electric Carbon Steel Flange Pneumatic-Hydraulic Trunnion Mounted Ball Valve
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Product Details


KATA Metal seal trunnion mounted ball valves are offered in cast steel turnnion mounted ball valve or forging steel turnnion mounted ball valve. The valve seating surface are integral or faced with weld metal .Under the bottom of seats, seat pre-loading springs are positioned to ensure two floating seats can attach the ball's surface tightly, other more, pressure of medium also can push seats to attach ball tightly to ensure sealing more reliable.

The trunnion ball valve is equipped with a movable seat seal ring which can generate displacement under the pressure of medium. In case that any medium pressure exists, the pressure will press the valve seat seal ring onto the ball tightly, guaranteeing the sealing performance of the ball valve.   

Compared with soft seal ball valves, metal-to-metal ball valves have wider working temperature and medium range. During working condition, it has the features of reliable and safe sealing performance, long service life, easy operation and less pressure loss. It's mainly used in service of high temperature, high pressure, severe corrosion and solid material containing services, such as coal chemical, polysilicon and vitriol/ nitric acid industry.    

Design features

Design standard: ISO 14313, AIP 6D, BS 5351, GB/T 12237, GB/T 19672, API 607/6Fa

Full bore/Reduce bore

Fire-safe type

Anti-blow out stem

Anti-static design

Locking provision 

ISO 5211 Std. Top flange connection

DBB (Double block and bleed)

DIB-1/DIB-2 (Double Isolation and Bleed)

Bonnet extend

Low temperature packing

Emergency grease injection device

Cavity pressure self relief

Product Range

Nominal diameter: 2"~36"(DN15~900)

Pressure range: Class 150~2500(PN20~PN420)

Body material:  ASTM A216 WCB/ASTM A105N

               ASTM A352 LCB ASTM A350 LF2

               ASTM A351 CF8/CF3  ASTM A182 F304/F304L

               ASTM A351 CF8M/CF3M  ASTM A182 F316/F316L


Trims material: ASTM A105+ENP

              ASTM A350 LF2+ENP

              ASTM A182 F6a

              ASTM A182 F304/F304L

              ASTM A182 F316/F316L

              ASTM A182 F51

              ASTM A564 17-4PH


Seals material:  Surface Nitriding, TCC, 13Cr, 304, 316, STL, INCONEL, MONEL, HASTELLOY ALLOY, Cu, ETC..

                VITON, HNBR, EPDM, LIP SEAL, PTFE+VITON, Graphtie, PTFE, ETC.

End connection: RF, RTJ, BW;

Operator type: Wrench, Worm gear, Electric actuator, pneumatic actuator, gas over oil actuator, electro-hydraulic actuator, ETC.

Working temperature: -46~550℃

Medium:Water, gas, oil, etc.