Ball Valve Trunnion Mounted Welded Body | Fluitek
Ball Valve Trunnion Mounted Welded Body | Fluitek
Ball Valve Trunnion Mounted Welded Body | Fluitek
Ball Valve Trunnion Mounted Welded Body | Fluitek

Ball Valve Trunnion Mounted Welded Body | Fluitek

The Ball Valve Trunnion Mounted Welded Body by Fluitek is a robust and versatile valve designed for various industrial applications. Key features include an anti blow-out stem and three seat design options: SPE (Single Piston Effect), DPE (Double Piston Effect), and DUAL (a combination of SPE and DPE). These designs ensure reliable sealing and pressure management. The valve complies with standards such as API 6D, ASME B16.34, and is fire-safe according to BS6755 and API 6FA. It offers flexibility in operation, being available in manual or actuator-equipped versions, and can be customized with metal-to-metal seats for high-temperature or slurry conditions, subsea designs, and stem extensions for buried applications. Additional options include locking devices, emergency seal injections, and welded gland plates, making it suitable for demanding environments.

Description

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.
  • 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.
  • 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 glandplate.

Certifications

Fluitek SRL Company Quality Policy 11-2022 – ENG