FLUITEK ORSENIGO Trunnion Mounted Welded Body

Design Features

Trunnion Welded Body Ball Valves typical application is for gas transmission, buried pipelines (underground). Raw material can be either forgings or centrifugal castings.
Valve main technical features include anti blow-out stem and valve seats design available in three different versions:
SPE (Single Piston Effect): the seat is energized by upstream pressure only .
DPE (Double Piston Effect): the seat can be energized by upstream pressure or by body cavity pressure .
DUAL (SPE upstream and DPE downstream): combining the two seat designs explained above, a double barrier can be assured in case of seat sealing failure.
Main reference codes:
Standard design can be in accordance with API 6D / API 6D SS / ASME B16.34.
Antistatic design as per API 6D and ISO 17292.
Fire Safe according to BS6755 / API 6FA / API 607, since each sealing point is provided by a secondary fire-safe seal in graphite. Valve soft seats also are provided with secondary metal-to-metal seal in case of fire.
Welded body ball valves can be manual operated (lever or gearbox depending on valve size), but also equipped with an actuator (electric, pneumatic, hydraulic, gas-over-oil etc.).

Standard design is soft seated and gear operated, the following special designs are also available:
METAL-TO-METAL SEAT: for high temperatures (larger than 250°C) or dirt/slurry service, hard facing on seat and ball contact surfaces (Tungsten or Chromium Carbide).
SUBSEA DESIGN: for subsea applications, Side entry Ball valves are provided with additional seals, blind nuts, subsea actuators etc. Valve design according to API 6D SS and ISO 14723.
STEM EXTENSION. For underground/ buried applications. The operator (lever/gear/actuator) can be lifted by an extension fixed to valve body, and a joint coupled to the stem.
The following optional features are also available:
Locking device.
Extended SS tubing cw Floating ball valves for drain and vent connections (underground / buried)
Emergency stem seal injection;
Emergency seats sealant injection;
Welded gland plate.

 

Industries

Oil & Gas, Geothermal, Power Plant

 

Materials

Wide range of materials: carbon steels, austenitic or martensitic SS.

 

Pressure and Temperature

 

Size

Larger sizes (up to 60 inches) and medium pressure classes (up to ASME 900 psi).

 

Connection

Valve ends can be flanged (RF, FF, MF or FF, RTJ), according to ASME B16.5 (up to 24”) or ASME B16.47 (26” and above), Butt-Welding according to ASME B16.25.

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