Ball Valve Trunnion Mounted Class 900/1500/2500 - 7090/7050/7042 RB | JC Valves

JC Valves 7090/7050/7042 RB Trunnion Ball Valves

The 7090 / 7050 / 7042 RB series are trunnion-mounted, 3-piece forged, reduced bore ball valves, available in ASME Class 900 / 1500 / 2500. Designed for main isolation in natural gas, hydrocarbon, chemical, and petrochemical pipelines where design pressure requires forged bodies and controlled seat tightness.

Technical Data

• Types: 7090 Class 900, 7050 Class 1500, 7042 Class 2500
• Construction: 3-piece body, reduced bore
• Connections: ANSI flanged
• Body materials: ASTM A105N, ASTM A350 LF2, ASTM A182 F316
• Seats: RPTFE, Devlon, PEEK
• Stem: blow-out proof
• Antistatic device: non-removable
• Stem sealing: graphite packing
• Seat springs: Inconel 750
• Top flange: ISO 5211 for gear or actuator mounting

Reduced Bore and Hydraulic Selection

Reduced bore design features a ball port smaller than the nominal line size, reducing weight and operating torque compared to full bore, but increasing pressure drop and affecting Kv/Cv. Not recommended where pigging or minimal pressure loss is required.

Seat Design and Cavity Relief

Standard JC construction is SPE – Single Piston Effect, providing automatic cavity overpressure relief to the pipeline. DPE – Double Piston Effect retains cavity pressure; external relief or bleed valve is required. PMSS and emergency seat/stem sealant injection available for temporary leakage control until maintenance.

Standards

Complies with API 6D, PED, MSS SP-55, NACE MR0175 / ISO 15156, NACE MR0103 / ISO 17945, fire-safe API 607 / ISO 10497 / API 6FA, ISO 15848 / TA-Luft, and ATEX.

FAQ

When to select RB over FB?
Use RB when higher pressure drop is acceptable and full bore or pigging is not required by the process.

Specification requirements?
NPS, Class, body material, seat material, SPE/DPE, NACE compliance, fire-safe, fugitive emissions, ATEX, Kv/Cv, and actuator type.