
Trunnion Mounted Ball Valves
The ball is mounted on trunnions supported in body bearings above and below the ball. Sealing is achieved by spring loaded piston type seats, which shut off flow when the line pressure acts on the upstream seat. This design provides automatic relief of cavity overpressure. The standard design cannot be used for double block and bleed isolation duty, but “twin seal” design available, despite they would seldom be the first choice for such a service.
In this case, automatic cavity relief is forfeited and an external relief valve must be provided if specifically requested.
Valve Specs
Valve Design
Side entry, Top entry
Construction
Bolted body
Trim Design
Trunnion ball
Size
2" - 36"
Pressure Range
150# - 2500#
Design
ASME VIII or B 16.34
Bore
Full or Reduced
Materials
Carbon Steel, Stainless Steel, Duplex, Super Duplex Incoloy, Bronze Titanium Exotic
Material Status
Forged or Cast
Seats
Soft or Metal
Seals
O-Rings or Lip-Seals
Testing
API 598 - API 6D
Operator
Wrench, Gear, Actuated
All materials are in conformity with NACE MR 01-75
Request a quote
Contact Us
CONTROLFLUID s.r.l.
Via Braia, 55
16019 Ronco Scrivia (GE)
ITALIA (IT)
Tel. +39 010 9642630
Fax +39 010 9642641
Sede principale
Assemblaggio valvole motorizzate, elettriche e pneumatiche, ispezione finale e collaudi NDT
CONTROLFLUID s.r.l.
Stabilimenti di produzione di valvole a sfera
Via per Gallarate, 50
21010 Besnate (VA)
ITALIA (IT)
CONTROLFLUID s.r.l.
Stabilimento di produzione di Gate, Globe
and Check Valves
Via A. Mauri
20900 Monza (MB)
ITALIA (IT)
CONTROLFLUID - KOREA
Produzione estera
269, Hawmok-Dong
Gimhae-City Gyeongnam
KOREA (KR)

