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Home News Why Choose J-VALVES 3PC Butt Weld Trunnion Ball Valve? — The Ideal Solution for Cost Reduction & Efficiency Improvement Under High Pressure
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3PC Butt Weld Trunnion Ball Valve

In industrial piping systems, valve failures frequently trigger full production shutdowns and result in substantial economic losses. Conventional one-piece welded ball valves cannot be serviced in line. Once sealing issues occur, the pipeline has to be cut for valve replacement, which leads to high maintenance costs and prolonged downtime. Featuring a modular structure, J-VALVES 3PC butt weld trunnion ball valve completely addresses this pain point and stands out as a top choice to cut costs and boost efficiency for high-pressure working conditions.


1. In-line Maintenance: A Revolution from Pipeline Cutting to Non-stop Servicing

Servicing traditional welded ball valves requires cutting pipelines and removing valves, which involves complicated operations and forces the entire pipeline out of service. Adopting a three-piece structure, J-VALVES 3PC butt weld trunnion ball valve allows technicians to loosen connecting bolts and remove the central valve body to replace valve seats, seals or inspect the ball. No pipeline cutting or medium draining is needed. The maintenance time is shortened from days to hours, and maintenance costs are reduced by over 60%. For chemical plants with corrosive medium pipelines, this design helps cut annual downtime losses by millions of RMB.


2. Zero-leakage Sealing: Reliable Safety Assurance for High-pressure Service

The trunnion mounted ball design of J-VALVES 3PC butt weld ball valve effectively prevents ball displacement under high pressure and keeps sealing surfaces tightly fitted at all times. Equipped with spring-loaded seats and high-performance sealing materials, the valve delivers bidirectional zero leakage even under the stringent Class 2500LB high-pressure rating. The ball is mirror-polished with surface roughness Ra ≤ 0.8 μm, which lowers operating torque, reduces wear on sealing surfaces caused by media and extends the valve service life.


3. Customized Design: Adapt to Special Working Conditions Across Industries

Working conditions vary greatly among different industries, and standard valves often fail to meet special operational requirements. J-VALVES provides a full range of customization services:

  • Material Customization: Duplex steel for highly corrosive media; LF2 low-temperature carbon steel for cryogenic service; Chrome-molybdenum steel for high temperature and high pressure applications.

  • Sealing Customization: PTFE seals for general media; PEEK seals for high-temperature media; metal-to-metal hard seals for media containing solid particles.

  • Structural Customization: Extended stem, anti-static devices and fire-safe structures are available upon request, suitable for buried pipelines, flammable and explosive environments and other special scenarios.

4. Success Story: Import Substitution for Lower Costs & Higher Efficiency

A refining enterprise originally used imported one-piece welded ball valves on its high-pressure hydrogenation unit. Complicated maintenance and high procurement prices kept its operational costs at a high level. In 2023, the enterprise replaced the old valves with J-VALVES 3PC butt weld trunnion ball valves. The procurement cost was cut by 40% and maintenance cost dropped by 55%. The valves operated trouble-free for 18 consecutive months, fully complying with the strict requirements of high-pressure hydrogenation service. Later, the enterprise rolled out J-VALVES valves across the entire unit, achieving both import substitution and effective cost control.


Conclusion

For industrial piping systems operating under high pressure, heavy corrosion and frequent maintenance demands, J-VALVES 3PC butt weld trunnion ball valve is an optimal option combining outstanding reliability and cost-effectiveness. Its in-line maintenance capability, zero-leakage performance and flexible customized design help enterprises slash operational costs, improve system stability and ultimately realize the goals of cost reduction and efficiency enhancement.

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Nominal Size: 1-1/2 inch / DN40 Pressure Rating: 1000 WOG (68.9 bar cold working, non-shock) Body Type: Three piece, bolted end caps, four body bolts Body Material: ASTM A351 CF8 (304), CF8M (316) optional Ball: CF8, polished Ra 0.4 µm, full or reduced bore Seat: PTFE, RPTFE, PPL, or Stellite faced metal Body Gasket: PTFE to 180°C, graphite above Packing: PTFE V-ring to 200°C, graphite above End Connection: NPT, BSP, socket weld B16.11, butt weld B16.25, flanged RF Actuator Mounting: ISO 5211 F05 / F07 pad Air Supply: 0.4 to 0.7 MPa clean dry air Service Temperature: -29°C to +260°C, seat dependent Design Reference: MSS SP-110 general purpose, ASME B16.34 body wall Test Standard: API 598, ISO 5208
Nominal Size: 3/4 x 1/2 inch (DN20 x DN15), reduced bore Pressure Class: ASME Class 600 / PN100, 102.1 bar at 38°C Body Material: ASTM A182 F51 forged duplex, UNS S31803 PREN: Approximately 35 Ball: F51 with HVOF tungsten carbide or Stellite overlay Stem: F51, SS316 or 17-4PH, blowout proof Seat: RPTFE, Devlon, PEEK, or Stellite faced metal Bolting: B8M Class 2, alloy 718, or B7M for sour service End Connection: NPT, BSP, socket weld ASME B16.11, butt weld ASME B16.25 Bleed Port: Cavity bleed with plug or needle valve, lockable option Service Temperature: -29°C to +300°C, seat dependent Design Standard: API 6D, API 608, ASME B16.34 Test Standard: API 598, ISO 5208, cavity test through bleed port Sour Service: NACE MR0175 available