Ball Valves

First decide between floating and trunnion mounted design.

• Floating ball valves

  In the Floating Ball Valves, line pressure pushes the ball against the downstream seat; the design is block and bleed to API 6D, and the page lists sizes up to 6 inch.

• Trunnion ball valves

  In Trunnion Ball Valves the ball is held on a trunnion that carries the pressure load; the lower operating torque suits large bores and high pressure classes at city gates, compressor stations and transmission lines.

• Seats and underground versions

  All TIV trunnion mounted ball valves are double block and bleed (DBB) to API 6D, with self-relieving, DIB-1 or DIB-2 seats; underground versions add a stem extension with drain, vent and sealant lines.

• Body configuration

  Side entry bolted bodies are the TIV standard; top entry bolted bodies allow the ball to be removed from the top for in-line maintenance, and side entry welded bodies reduce potential leak paths.

• Modulating duty: Deltaflux

  For modulating duty choose the Deltaflux control ball valve: its quarter-turn trim gives high flow coefficients with minimum pressure drop when fully open, which suits high differential pressure or large flow rates.

• Actuation

  The Deltaflux can be supplied with a bare stem or with a pneumatic, hydraulic or electric actuator on an ISO 5211 top mounting.

• Materials, tests and hydrogen

  Fire-safe designs to API 607 and API 6FA, fugitive emission testing to ISO 15848-1, metal seats for high temperature, hydrogen blending solutions; Al Khobar engineers check class, size and end connections for Jubail or Muscat.