Ball Valve Trunnion Mounted Side Entry | Fluitek | Philippopoulos s.a.
Ball Valve Trunnion Mounted Side Entry | Fluitek | Philippopoulos s.a.
Ball Valve Trunnion Mounted Side Entry | Fluitek | Philippopoulos s.a.
Ball Valve Trunnion Mounted Side Entry | Fluitek | Philippopoulos s.a.

Ball Valve Trunnion Mounted Side Entry | Fluitek

Fluitek Side Entry Trunnion Mounted Ball Valve

Side-entry trunnion mounted ball valve designed for primary isolation in high-pressure liquid or gas pipelines. The ball is mechanically supported by a shaft and trunnion, reducing seat loading compared to floating designs and enabling use in large DN or high differential pressure applications.

Design and Standards

  • Design in accordance with API 6D, API 6D SS, ASME B16.34, or API 6A
  • Antistatic device per API 6D and ISO 17292
  • Ends: flanged RF, FF, MF, RTJ per ASME B16.5 up to 24" and ASME B16.47 from 26" and above
  • Welded ends per ASME B16.25
  • Fire-safe per BS 6755, API 6FA, or API 607
  • Operation via lever, gearbox, electric, pneumatic, hydraulic, or gas-over-oil actuator.

Seat Design

Available with three seat configurations:

  • SPE: seat energized by upstream pressure.
  • DPE: seat energized by upstream or body cavity pressure.
  • DUAL: SPE on upstream side, DPE on downstream, providing double barrier in case of seat seal failure.

SPE/DPE/DUAL selection should consider DBB requirements, thermal expansion of trapped media, and available vent or relief systems.

Special Executions

Standard soft-seated; also available as:

  • Cryogenic execution with fully austenitic stainless body, PCTFE or metal seat, and stem extension per BS 6364
  • Metal-to-metal seat for temperatures above 250°C or dirty/slurry service
  • Subsea design per API 6D SS and ISO 14723
  • Stem extension, emergency stem/seat seal injection, weld overlay 316 or Inconel 625, and seal-welded fittings.

Applications

Suitable for oil & gas, petrochemical, chemical processing, gas pipelines, storage terminals, and lines requiring on/off isolation with controlled leakage. Not intended for continuous throttling service.

FAQ

What data is required for specification?
NPS/DN, pressure class, full or reduced bore, end type, body material, seat design SPE/DPE/DUAL, fire-safe, NACE, ATEX, SIL, and actuator type.

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 / API 6A. • 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, or Hub, according to customer Requirements.

• 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.

Trunnion 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:

  • CRYOGENIC (see specific section): full austenitic stainless steel valve, provided with PCTFE or metal seat, lipseals as static and dynamic seals, stem extension according to BS6364 (or as per customer requests).
  • 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 special 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.
  • Floating ball valves for drain and vent connections (if prescribed by Customer requirements).
  • Emergency stem seal injection.
  • Emergency seats sealant injection.
  • Weld overlay (316 or Inconel 625) on dynamic sealing areas or in all wetted parts.
  • Removable supports.
  • Certified lifting devices.
  • Welded glandplate.
  • Seal welded fittings.

Certifications

Fluitek SRL Company Quality Policy 11-2022 – ENG