Cryogenic Ball Valves – Extended Bonnet, to -196°C for LNG

Size / Bore： 8 inch (DN200), full bore standard; reduced bore on request
Pressure Class： ASME Class 2500 / PN420
Design Temperature： -29°C to +425°C (-20°F to +800°F)
Body / Closure： ASTM A182 F11 forged, 1.25Cr-0.5Mo; F22 or F91 on request
Ball： A182 F11 with Stellite 6 overlay, or tungsten carbide HVOF 1,000-1,200 HV
Seat： Metal seated, Stellite 6 or nickel-based overlay, lapped as a matched pair
Seat Design： SPE standard; DPE (DIB-1) or DIB-2 optional
Leakage Class： ISO 5208 Rate D metal seated; Rate C achievable on low differential
Stem： A182 F316, anti-blowout, anti-static, stem extension available
Packing： Flexible graphite, live loaded gland
Body Joint： Bolted, spiral wound gasket 316L + graphite
Bolting： ASTM A193 B16 studs / A194 Grade 4 nuts
End Connection： RTJ flange to ASME B16.5; butt weld to ASME B16.25 optional
Face to Face： ASME B16.10 long pattern
Design Standard： API 6D, ASME B16.34
Test Standard： API 598 / ISO 5208; shell 638 bar, seat 468 bar
Fire Safe： API 607 / ISO 10497, API 6FA
Fugitive Emission： ISO 15848-1, class and temperature per project
Operation： Worm gear standard; pneumatic, electric or hydraulic actuated
Approx. Weight： About 620 kg, gear operated
Certification： EN 10204 3.1, NACE MR0175 on request, PED on request

J-VALVES PN150 F316 three piece trunnion mounted ball valve in DN500 x DN400 reduced bore, Class 900 ring joint flanged, with an extended bonnet for cryogenic service and cold testing to BS 6364.

A cryogenic ball valve for LNG service is a quarter-turn isolation valve with an austenitic stainless pressure boundary, an extended bonnet and PCTFE seats, designed to isolate liquefied natural gas at about -162°C on unloading, storage, boil-off gas and send-out lines. J-VALVES manufactures this family in Wenzhou, Zhejiang, from 1/2 inch to 56 inch and ASME Class 150 to 2500, built to BS 6364 design rules and tested cryogenically to ISO 28921-1 when the purchase order calls for it.

Size： 20x16 inch (DN500 x DN400)
Bore： Reduced bore, 16 inch through the ball
Pressure Class： ASME Class 900 / PN150
Service Temperature： -50°C to -196°C
Body Material： CF8M, CF3M, F316
Ball： Trunnion mounted, F316 with ENP
Seat： PCTFE spring loaded
End Connection： Flanged RTJ to ASME B16.5 / B16.47
Face-to-Face： ASME B16.10
Approximate Weight： 900 to 1,500 kg dry
Operation： Gear operator, pneumatic or electric actuator
Design Standard： API 6D, ASME B16.34
Cryogenic Test： BS 6364, API 598

Size Range： 1/2 to 8 inch (DN15 to DN200)
Pressure Class： ASME Class 150 to 1500
Service Temperature： -50°C to -196°C
Body Style： Three piece, bolted end caps, swing-out centre
Body Material： CF8M, CF3M, F316
Seat： PCTFE or metal seated
Bolting： A320 L7 / L7M studs with nuts
Gasket： Spiral wound 316L with graphite filler
End Connection： Socket weld B16.11, butt weld B16.25, flanged B16.5, NPT
Design Standard： API 608, ASME B16.34
Cryogenic Test： BS 6364 on request
Cavity Relief： Self-relieving seat or drilled relief
Operation： Lever, gear, pneumatic, electric

A fully welded cryogenic ball valve is a trunnion mounted ball valve whose pressure boundary is a single welded shell with no flanged body joint, designed for buried LNG transfer lines and cold duty pipelines down to about -46°C in low alloy steel or to -162°C in austenitic stainless steel. Because the body is one continuous weldment, the external leak paths that exist on a bolted flanged valve are removed at the source rather than managed with gaskets and bolting.

Size Range： DN25 to DN300 (1 to 12 inch)
Pressure Class： ASME Class 150 to 900 / PN20 to PN150
Service Temperature： -50°C to -196°C
Bonnet： Extended, length sized to insulation and ambient
Body Material： CF8M, CF3M, F316
Seat： PCTFE, spring loaded
Stem： F316 extended stem, anti-blowout
Packing： Flexible graphite, gland above 0°C
End Connection： Flanged RF/RTJ, butt weld
Design Standard： API 6D, ASME B16.34, ISO 28921-1
Cryogenic Test： BS 6364
Orientation： Stem vertical to 45 degrees from vertical
Operation： Lever, gear, pneumatic or electric with bracket

Size Range： DN25 to DN300 (1 to 12 inch)
Pressure Class： ASME Class 150 to 900 / PN20 to PN150
Service Temperature： -50°C to -196°C
Bonnet：Extended, length sized to insulation and ambient
Body Material： CF8M, CF3M, F316
Seat： PCTFE, spring loaded
Stem： F316 extended stem, anti-blowout
Packing： Flexible graphite, gland above 0°C
End Connection： Flanged RF/RTJ, butt weld
Design Standard： API 6D, ASME B16.34, ISO 28921-1
Cryogenic Test： BS 6364
Orientation： Stem vertical to 45 degrees from vertical
Operation ：Lever, gear, pneumatic or electric with bracket

Nominal Bore: 20" × 16" (DN500 × DN400)
Pressure Class: 900LB (PN150)
Temperature Range: -29℃ to +425℃
Body/Bonnet: ASTM A352 LCB/LCC (low-temperature cast carbon steel), or A350 LF2 / A182 F304/F316 (low-temperature forged stainless steel, cryogenically treated)
Ball: Material matching the body + hard chrome plating or nitriding treatment
Stem: F304/F316 or 17-4PH (cryogenically treated)
Seat: PCTFE (Polychlorotrifluoroethylene), PTFE, RPTFE; PEEK available for cryogenic high-pressure service
Sealing Materials: PCTFE/PTFE/RPTFE (seats); low-temperature special graphite or PTFE/V-type combination (stem packing)
Extended Stem/Bonnet: Material matching the body, length customized to insulation thickness
Bearing/Support Shaft: F304/F316 or Inconel alloy + low-temperature self-lubricating bearings
Gasket: Metal ring gasket (octagonal/oval type, conforming to ASME B16.20) or low-temperature special gasket
End Connection: Flanged (RTJ ring-type joint face, conforming to ASME B16.5)
Operation: Manual (low-temperature worm gear/bevel gear, bearing-assisted torque reduction), pneumatic (low-temperature type), electric (low-temperature type), hydraulic (high-torque actuator mandatory with low-temperature accessories)
Design Standards: ASME B16.34, API 6D, API 608
Inspection & Test Standard: API 598, API 6D
Face-to-Face Dimension: Conforms to ASME B16.10

Nominal Size: 8″ (DN200)
Pressure Class: 900LB (PN150)
Temperature Range: -196℃ to +100℃
Body / End Caps:ASTM A182 F304/F304L forged stainless steel; optional F316/F316L (for enhanced corrosion resistance) or A350 LF2 (economic low-temperature steel, limited to -46℃).
Ball:F304 with ENP (electroless nickel plating), hard chrome plating, or Stellite alloy overlay.
Trunnion / Supports:Surface-hardened F304 or 17-4PH precipitation hardening stainless steel.
Stem:Extended stem in F304/F304L, 17-4PH or Inconel 718 (for higher strength).
Seat Seal:Modified PTFE (-196℃ ~ 150℃); PEEK (-60℃ ~ 260℃); metal seal with flexible graphite (-196℃ ~ 650℃).
Packing:Flexible graphite reinforced with Inconel wire, special braided packing for low-temperature service.
Gasket:Flexible graphite stainless steel spiral wound gasket (304/316L) or metal ring gasket.
Bolts:ASTM A320 L7/L7M (low-temperature alloy steel) or B8M (F316 stainless steel), with A194 7/7M/8M nuts.
End Connection:Flanged (RF raised face / RTJ ring type joint, ASME B16.5); optional BW butt-weld ends (ASME B16.25).
Operation:Manual (worm gearbox, standard with cryogenic extended stem); pneumatic (low-temperature cylinder with dry air supply), electric (low-temperature motor), hydraulic.
Design Standards:ASME B16.34, API 6D, API 608
Inspection & Test Standards:API 598, API 6D
Face-to-Face Dimension:ASME B16.10

Nominal Size: 8″ (DN200)
Pressure Class: 900LB (PN150)
Temperature Range: -196℃ to +100℃
Body/End Cap: ASTM A182 F304/F304L forged stainless steel; optional F316/F316L (higher corrosion resistance) or A350 LF2 (economic low-temperature steel, limited to -46℃)
Ball: F304 with ENP (electroless nickel plating) / hard chrome plating / Stellite alloy overlay
Trunnion/Support: Surface-hardened F304 or 17-4PH precipitation hardening stainless steel
Stem: Extended stem in F304/F304L; optional 17-4PH or Inconel 718 (higher strength)
Seat Sealing: Modified PTFE (-196℃~150℃); PEEK (-60℃~260℃); metal seal with flexible graphite (-196℃~650℃)
Packing: Flexible graphite reinforced with Inconel wire, special braided packing for cryogenic service
Gasket: Flexible graphite stainless steel spiral wound gasket (304/316L) or metal ring joint gasket
Bolts: ASTM A320 L7/L7M (low-temperature alloy steel) or B8M (F316 stainless steel), with A194 7/7M/8M nuts
End Connection: Flanged (RF Raised Face / RTJ Ring Type Joint, in accordance with ASME B16.5); optional BW butt weld ends (ASME B16.25)
Operation: Manual (worm gearbox, standard with cryogenic extended stem); pneumatic (low-temperature cylinder with dry air supply), electric (low-temperature motor), hydraulic
Design Standard: ASME B16.34, API 6D, API 608
Testing Standard: API 598, API 6D
Face-to-Face Dimension: In accordance with ASME B16.10

Nominal Size: 8″ (DN200)
Pressure Class: 900LB (PN150)
Temperature Range: -196℃ to +100℃
Body / Bonnet: Forged stainless steel ASTM A182 F304/F304L; upgrade options available: F316/F316L (higher corrosion resistance) or A350 LF2 (economic low-temperature steel, rated to -46℃)
Ball: F304 with ENP (electroless nickel plating) / hard chrome plating / Stellite alloy hardfacing
Trunnion / Supports: Surface‑hardened F304 or 17‑4PH precipitation‑hardened stainless steel
Stem: Extended stem in F304/F304L, 17‑4PH or Inconel 718 (higher strength)
Seat Seal:Modified PTFE (-196℃ ~ 150℃).PEEK (-60℃ ~ 260℃).Metal seal with flexible graphite (-196℃ ~ 650℃)