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The GKV-225G series Pneumatic On-off Ball Valve flange trunnion ball valves are ASME B16.34 Class 150 and Class 300 full bore ball valves.
The GKV-225G series trunnion mounted ball valve adopts a sturdy and durable flange ball valve design, with high cost-effectiveness and reliable operation, suitable for various working conditions.
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GKV-225G FULL PORT TWO-PIECE TRUNNION BALL VALVE FLANGE END
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Size Range NPS 1/2" to 24",DN15 to DN 600
Operating Pressure ASME Class 150LB ~ 2500LB, EN 1092 PN10 ~ PN420
Temperature Range -50°F to 1472°F(-46°C to 800°C) |
Body Materials ASTM A351 CF8, CF3, CF8M, CF3M (Cast stainless steel); ASTM A182 F304, F316, F316L, F904L, F51 (Duplex stainless steel, Forged stainless steel). ASTM A216 WCB, WCC (Cast carbon steel); ASTM A350 LF2, ASTM A352 LCB (low-temperature carbon steel); ASTM A105 (forged steel). ASTM A182 F22 (Cr-Mo alloy steel); Special Alloys (Nickel-Based & High-Performance): Inconel 600, 625, 825, Incoloy 800H, Hastelloy C276, C3, C4, Monel 400, Monel K500; B463 Alloy 20; ASTM B348 Titanium Gr.2, Gr.3, Gr.5, Gr.12; ASTM B493 Zirconium R60702, ASTM B365 Tantalum R05200, R05400 (Tantalum).
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Leakage Class IV, Class V, Class VI |
Stem Materials ASTM A479 Type 316, ASTM A564 Type 17-4PH, ASTM A182 Type F51 |
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Face To Face ASME B16.10, EN 588-1 F4/F5, DIN 3202 F4/F5, JIS B2002 |
Seat Materials TFM1600, Optional: Tek Fi ®*、 UHMWPE, RPTFE, PTFE, etc |
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Testing Standard API 598, EN-12266-1 All valve stems and seats are tested to 100 psi gas closure test for bubble tight integrity before shipping, Vacuum Service to 29" Hg
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Ball Materials Stainless Steel A351 CF8 / CF8M,A182 F304 / F316 / F316L,A105,A216 WCB ,A350 LF2, Titanium B348 Gr.2 / Gr.5,Zirconium B493 R60702,Tantalum B365 R05200 / R05400,Hastelloy ,Nickel-Based Alloys,Inconel 600/625/825,Monel 400/ Monel K500,B463 Alloy 20,F51 (Duplex Stainless Steel),A182 F51, A182 F22 ,A182 F904L |
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End Connections Flanged Ends per ASME B16.5 |
Design Standard ASME B16.34, EN12516, GB/T 12237 |
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Operation Pneumatic and electric |
Connect Platform ISO5211 |
The GKV-225G series is an ASME B16.34 Pneumatic Trunnion Ball Valve

The design of GKV-225G series flange ball valves ensures bubble level sealing and low operating torque. The semi "-2" size model is equipped with GEKO's unique process technology, which can achieve continuous internal pre tightening of packaging. The 2/2 "-12" size model uses a separate packaging cover, which can be easily adjusted without disassembling or installing hardware or actuators. The packing cover adopts a special design, which can evenly distribute the load on the packing.
The dynamic load packing achieves self adjustment through its Belleville gasket, which can compensate for environmental changes and wear, ensuring maintenance free operation and a long service life. The larger GKV-225G series flange ball valve is equipped with a bearing structure that supports the ball, which can effectively reduce operating torque.

The GKV-225G series flanged ball valve is available in stainless steel (CF8M), carbon steel (WCB), and special alloys (such as alloy 20, Hastelloy, etc.) materials, as well as other dissimilar alloys upon request. The non fire resistant version is equipped with standard stem packing. API 607 fireproof valve core is equipped with graphite valve stem packing. The GKV-225G series valve provides an integrated casting ISO 5211 installation platform for easy automation operation.
The unique design of GKV225G flange ball valve series

The GKV-225G series flange ball valve can use Stellite ® Cobalt chromium alloy valve seat coating provides excellent corrosion resistance, higher operating temperature, and excellent wear resistance with high hardness.
The GKV-225G series flanged ball valve with metal seat adopts butt sealing to meet or exceed the shut-off requirements of CI 70-2 Class V as the standard, and can be optionally equipped with Class VI shut-off requirements.
The GKV225G series two-piece full bore flange ball valve has applications in multiple industries
Petrochemical and natural gas industries
Municipal water supply and HVAC engineering
Ship and Ocean Engineering
Environmental Protection and Industrial Water Treatment