Product details

TRUNNION BALL VALVE - STEFFENINI

Steffenini Trunnion ball valves are a high-end industrial ball valve series, designed to API 6D standards, specifically for high-pressure and large-size pipeline systems (DN150 – DN600 and above), commonly found in the oil and gas, chemical, and energy industries. They differ from floating ball valves in that the ball is fixed by a trunnion, reducing friction on the seat and increasing durability during high-pressure operation.

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Technical Specifications

Design: Trunnion-mounted ball valve
Standards: API 6D, ASME B16.34
Working Pressure: ANSI Class 150 – 2500 (equivalent to PN20 – PN420)
Nominal Size: 6” – 24” (DN150 – DN600)
Connection: RF (Raised Face), RJ (Ring Joint)
Body Material: Carbon steel, stainless steel (SS304/316), alloy steel, exotic materials
Ball: Stainless steel or hardened coated steel, wear-resistant
Seat (Sealing Gasket): PTFE, RPTFE, Viton, or high-temperature/high-pressure resistant materials
Working Temperature: -20 °C to 200 °C (depending on seat material)
Operation Mechanism: Lever, gearbox, electric or pneumatic actuator
Safety Features: Double Block and Bleed, automatic pressure relief in the valve body