A. Karimjee & Sons
A. Karimjee & Sons
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Forged Steel Ball Valves

Forged Steel Ball Valves

Forged Steel Ball Valves

Forged steel ball valves give fast quarter-turn shut-off with a strong, compact body for high-pressure service. Three-piece designs can be welded into the line and still serviced without cutting the pipe.

We supply one-, two- and three-piece forged ball valves in carbon, low-temperature and stainless steel, with floating or trunnion-mounted balls and fire-safe options.

Specifications

Product nameForged Steel Ball Valve
Valve type / designFloating or trunnion ball; 1-piece, 2-piece or 3-piece; full or reduced bore
Body materialASTM A105 / A105N; A350 LF2; A182 F304 / F316; SS316 ball and stem; PTFE, RPTFE, PEEK or metal seats
Size range½" to 4" (DN15 – DN100)
Pressure ratingClass 150 – 1500; 1000 – 6000 psi WOG for threaded / SW
End connectionsSocket weld, threaded NPT, butt weld, flanged
StandardsAPI 608, ISO 17292, ASME B16.34, API 607 fire-safe, API 598 testing
ApplicationsOil & gas, chemical, gas, instrument and high-pressure utility lines

Industrial uses

  • Oil & gasWellhead, skid and small-bore process isolation.
  • Gas linesNatural gas, LPG and nitrogen isolation.
  • Chemical processingCorrosive service with stainless body and PTFE seats.
  • Hydraulics & high-pressure waterTest rigs, injection and washdown systems.
  • Instrument & samplingRoot and sample point isolation.

Frequently asked questions

What is a fire-safe ball valve?

It is designed and tested (API 607 or API 6FA) to keep a tight seal, with limited leakage, after the soft seats are destroyed in a fire. It is required in many hydrocarbon services.

Why choose a 3-piece ball valve?

The centre body can be removed by unbolting it, without cutting a welded line, so seats and seals can be replaced in place.

Floating or trunnion?

Floating balls are standard in small sizes. Trunnion-mounted balls lower operating torque in larger sizes and higher pressure classes.