
Trunnion Mounted Ball Valves – API 6D, 2"–56", Class 150–2500
J-VALVES manufactures API 6D trunnion mounted ball valves from 2" to 56" (DN50-DN1400), Class 150 to 2500, in 2-piece, 3-piece and top-entry designs. Forged (A105, LF2, F316) and cast (WCB, CF8M, duplex) bodies,Titanium alloy, Inconel alloy, Monel alloy, bronze alloy and other special materials, soft or metal seated, with manual, pneumatic and electric actuation - engineered for high-pressure, large-bore pipeline isolation in oil & gas, LNG and offshore service.
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- Size Range: 8 inch (DN200); 2 to 24 inch in the family
Pressure Class: Class 300 (PN50), 51.1 bar at 38°C
Body Material: ASTM A105N forged, or A216 WCB cast
Ball: CF8 / CF8M, or A105N with ENP / hard chrome
Seat: PTFE, RPTFE, PPL, or A105N with Stellite hardfacing
Stem: 316 stainless or 17-4PH, anti-blowout
Bolting: A193 B7 studs with A194 2H nuts
Body Joint: Single gasketed joint; spiral wound or RTJ
Top Flange: ISO 5211 mounting pad, standard
End Connection: Flanged RF / RTJ to ASME B16.5
Temperature Range:-29°C to +425°C, seat dependent
Design Standard: ASME B16.34, API 6D, API 608
Test Standard: API 598, API 6DBrand:J-VALVES - Size Range: 2 to 56 inch (DN50 to DN1400)
Pressure Class: Class 150 to 2500 (PN20 to PN420)
Body Material: A105, A350 LF2, A182 F304 / F316, A694 F65
Ball: A105 + ENP 50 µm min, or stainless with STL / tungsten carbide
Seat: RPTFE, nylon, PEEK, or metal with Stellite hardfacing
Stem :A182 F6a, F316, or F51 duplex, surface hardened
End Connection: Flanged RF / RTJ to ASME B16.5, B16.47 above 24 inch
Actuator: Rack and pinion or scotch yoke, double acting or spring return
Air Supply: 0.4 to 0.7 MPa standard, 1.0 MPa option
Mounting Interface: ISO 5211 pad and drive
Pressure Drop: Under 0.01 bar at full open, full bore
Temperature Range: -46°C to +200°C; -196°C or +425°C option
Standard :API 6D, ASME B16.34, ISO 14313; test API 598, ISO 5208Brand:J-VALVES - Size Range: 2 to 48 inch (DN50 to DN1200)
Pressure Class: ASME Class 150 to 2500 / PN20 to PN420
Body Material: A105, A350 LF2, A182 F304 / F316, A351 CF8M, F51 duplex
Ball: A105 with ENP 50 micrometres or more, or stainless with Stellite / tungsten carbide
Seat: RPTFE, nylon, PEEK, PCTFE, or metal with Stellite
Stem: A182 F6a, F316, F51 or 17-4PH, anti-blowout
Actuator Type: Scotch yoke, double acting or single acting spring return
Air Supply: 0.4 to 0.7 MPa standard, 1.0 MPa option
Fail Position: Fail closed, fail open, or fail last
Anti-Static: Ball to body and stem to body 10 ohm or less, measured and recorded
Stroke Time: 1 to 60 s adjustable double acting; spring return typically 1 to 3 s
Actuator Mounting: ISO 5211
Design Standard: API 6D, ASME B16.34, ISO 14313
Test Standard: API 6D, API 598, ISO 5208
Fire Safe: API 607 / API 6FA
Operation: Pneumatic, with manual override optionBrand:J-VALVES - Sixteen inch Class 300 WCB trunnion mounted ball valves, full bore and gear operated, with body feet and spring loaded seats. At this size the ball and pipe loads meet at the trunnion bearings.Brand:J-VALVES
- Three piece forged trunnion valves for welded pipelines, fire safe to API 607 with a metal shoulder behind each seat. Butt weld ends to B16.25 and two support feet on the body.Brand:J-VALVES
- Nominal Size: 6 x 4 inch (DN150 x DN100) reduced bore; 2 to 12 inch range
Pressure Class: ASME Class 2500 / PN420
Cold Working Pressure: Approx. 42 MPa at 38 degrees Celsius
Shell Test Pressure: Approx. 63 MPa, 1.5 times rating
Seat Test Pressure: Approx. 46 MPa, 1.1 times rating
Body Material: Forged ASTM A182 F304, F316, F316L
Ball: F304, F316, HVOF tungsten carbide or Stellite hardfacing
Seat: PEEK or Devlon V-API with anti-extrusion ring; Stellite or Inconel metal
Seat Design: Double piston effect with external cavity relief
Stem: F316, 17-4PH, Inconel 718
Bolting: A193 B8M Class 2; Inconel 718 above 450 degrees Celsius
Gasket: RTJ ring to ASME B16.20, or spiral wound graphite
End Connection: Flanged RF or RTJ to ASME B16.5
Face to Face: ASME B16.10
Operation: Gearbox, pneumatic, electric, hydraulic, ESD
Gearbox Ratio: 250:1 to 400:1 for metal seated, 60 to 120 handwheel turns
Design Standard: API 6D, ASME B16.34, API 608
Test Standard: API 6D, API 598
Fire Safe: API 607 / ISO 10497Brand:J-VALVES - Three piece trunnion mounted valves forged from A105 at 6 inch Class 600, worm gear operated with a non reversing drive and a mechanical indicator, for turbine head warm up and drain lines.Brand:J-VALVES
- Three piece trunnion mounted valves forged from normalized A105N at 6 inch Class 1500, PN 250 by its ISO designation. Bearing blocks from this size up, API 6D designed and API 598 tested.Brand:J-VALVES
- Nominal Size: 12 x 10 inch (DN300 x DN250) reduced bore; 2 to 24 inch range
Pressure Class: ASME Class 150 to 600 / PN20 to PN100
Body Material: Forged ASTM A105; LF2, F304, F316 optional
Body Construction: Two or three piece, bolted, repairable in line
Ball: A105 with ENP, F304, F316
Seat: RPTFE, Devlon, PPL, Stellite faced metal
Stem: F6a, F304, F316, anti-blowout, independent of the ball
Packing: PTFE V-ring, flexible graphite, low emission composite
End Connection: Flanged RF or RTJ to ASME B16.5
Face to Face: ASME B16.10
Actuator: Hydraulic double acting or spring return, scotch yoke
Hydraulic Supply: 10 to 25 MPa working pressure
Accumulator: Nitrogen bladder, sized on the usable oil volume of the fail-safe stroke
Fail Position: Fail closed, fail open, or fail last with hydraulic lock
Closing Time: 15 to 120 seconds, independently adjustable open and close
Hydraulic Fluid: Mineral oil, synthetic ester, or water-glycol
Filtration: 25 micron standard, 10 micron for proportional control
Manual Override: Hand pump with captive handle, works with the circuit at zero pressure
Control Interface: 4-20 mA, Modbus RTU, DCS, ESD trip
Design Standard: API 6D, API 608, ASME B16.34
Test Standard: API 598, API 6D, ISO 5208Brand:J-VALVES - A two-piece reduced bore floating ball valve with DN50 flanged ends and a DN40 bore, forged A105 normalized body, PN20 / Class 150 rating and an extended stem that keeps the packing gland clear of insulation or burial. Soft seated, API 608, 178 mm face to face.Nominal Size: DN50 x DN40 (2 inch x 1.5 inch)
Bore: Reduced bore, 38 mm through the ball
Pressure Class: PN20 / ASME Class 150, 19.6 bar at 38 C
Body Material: ASTM A105 forged carbon steel, normalized
Ball Material: A105 hard chrome plated, 304 or 316 optional
Stem Material: 410 / 420 stainless, 17-4PH optional
Seat Material: PTFE, RPTFE or PPL
Stem Packing: Flexible graphite or PTFE
Body Construction: Two-piece, bolted body joint
End Connection: RF flanged to ASME B16.5, EN 1092-1 optional
Face to Face: 178 mm to ASME B16.10
Extended Stem: 100 to 500 mm one piece, longer on request
Operation: Lever, worm gear, pneumatic or electric
Design Standard: API 608, ASME B16.34
Test Standard: API 598, shell 1.5x and seat 1.1x
Fire Safe: API 607 / ISO 10497
Temperature Range: -29 C to +200 C, set by the seat
Flow Coefficient: Kv approx 105 m3/h
Breakaway Torque: approx 55 Nm at 19.6 bar differential
Approx Weight: 7 kg with a 200 mm extension
Material Certificate: EN 10204 3.1 with heat numberBrand:J-VALVES - J-VALVES F51 duplex three piece trunnion mounted ball valve in 12x10 reduced bore, Class 2500 ring joint flanged, metal seated, with a gear operator and welded body support feet.Brand:J-VALVES
- Size Range: 2 to 56 inch (DN50 to DN1400)
Pressure Class: ASME Class 150, 300, 600, 900, 1500, 2500
Body Style: Two piece, three piece, top entry, fully welded
Bore: Full bore and reduced bore
Body Material: WCB, LCC, CF8M, A105, F316, duplex F51
Ball: A105 with ENP 50-75 µm, or F316 hard chrome
Seat: RPTFE, PEEK, nylon; single or double piston effect
Stem: A182 F6a, F316 or 17-4PH, anti-blowout
End Connection: Flanged RF / RTJ, butt weld, socket weld
Design Standard: API 6D, ASME B16.34, ISO 14313
Face to Face: ASME B16.10
Fire Safe: API 607 / API 6FA, graphite secondary seat
Operation: Lever, gear, pneumatic, electric, gas over oilBrand:J-VALVES
Trunnion ball valves FAQ
Q1 What is a trunnion mounted ball valve used for?
Trunnion mounted ball valves are used for high-pressure, large-bore pipeline isolation - the ball is fixed by upper and lower trunnions, so seat sealing stays reliable at Class 150-2500 where floating designs are not practical.
Q2 What sizes do J-VALVES trunnion ball valves cover?
Q3 Can trunnion ball valves be actuated?
