Trunnion Mounted Ball Valve

Two Pieces/Three Pieces Cast Steel Body Ball Valve
Full Bore & Reduced Bore
Anti-static Device
Blow-out Proof Stem
Fire Safe Design
Emergency Sealant Injector
Vent Valve, Drain Valve
Lifting lugs and supporting feets(8" & larger)
Optional Lockable Handle Lever; Gear Box, Electric, Pneumatic & Hydraulic

Standard
Design: ASME B16.34/API 6D
Face to Face: ASME B16.10
End Flange: ASME B 16.5
BW End: ASME B16.25
Test: API 598
Fire Safe Test: API 607/API6FA
Special: NACE MR-01-75

Materials
BODY:
Carbon steel, Stainless steel, Low temperature carbon steel, Duplex, Special Alloys, ...Other materials under request

SOFT SEATS: PTFE, RPTFE, PEEK, DEVLON, NYLON, ...Other materials under request

METAL SEAT: Tungsten Carbide(TC), Stellited, Ni60...Other materials under request.

TRIM: A105+EP, 304, 316, 410, MONEL, ...Other materials under request


Double block and bleed design(DBB)
Double stem sealing.
The ball can maintain pressure sealing of pipeline when it is closed or fully opened.
Shorter upper sleeve reducces bearing load and operation torue
Limit device ensures the accurate opening and closing position of the valve
The vall and stem are separated so as to reduce stem load.
The stem adopts anti-blow-out design.
The sealing surface is inserted into te metal seat by polymer or plastic
The metalbacked self-lubricating PTFE bearing and PTFE thrust washers
Reduce the opening torque and prolong the service life of the valve.
Stem leakage can be prevented through the emergency grease fitting.

Application 
Refinery
Chemical
Petrochemical
Power plant
Gas

We welcome all the world customers to contact us for more cooperation.

With our years of technical knowledge and experience,we assure you,

Naibang will be one of your best parters in China.