Expanding Gate Valve – Bi-Directional Seal, Full Bore, High-Pressure Service

The Expanding Gate Valve is engineered for reliable and leak-proof performance in high-pressure and critical service conditions. Unlike standard slab gate valves, this model features an expanding gate mechanism, which consists of two gate segments that mechanically expand against the body seats to create a positive, mechanical seal—independent of line pressure.

This valve provides bi-directional sealing, ensuring flow can be stopped from either direction. The full bore eliminates flow restrictions, allowing for efficient fluid movement and easy pigging operations. Designed with a forged or cast steel body and metal-to-metal sealing surfaces, it ensures superior resistance to wear, temperature extremes, and pressure fluctuations.

Suitable for both drilling and production operations, the expanding gate valve is widely deployed in wellhead assemblies, manifolds, and flowlines where uncompromising shutoff and long service life are required.

Specifications:

– Valve Type: Expanding Gate Valve
– Design: Two-piece expanding gate with mechanical wedge seal
– Size Range: 1 13/16” to 7 1/16”
– Pressure Ratings: 2,000 PSI to 15,000 PSI (API 6A 2000# – 15000#)
– Body Materials: Forged or Cast Steel (AISI 4130, 410, LF2, Inconel optional)
– Sealing Type: Metal-to-metal, mechanical expansion seal
– Seal Direction: Bi-directional
– Bore Type: Full bore, piggable
– Design Standard: API 6A (latest edition)
– Temperature Rating: -46°C to +121°C (Classes K–U)
– Material Class: AA, BB, CC, DD, EE, FF
– PSL Levels: PSL1 to PSL4
– Performance Levels: PR1 & PR2
– Operation: Manual handwheel, hydraulic actuator, electric actuator
– End Connections: Flanged, Clamp Hub, Threaded as per API 6A
– Applications: Wellhead systems, choke & kill lines, production manifolds, and flowlines
– Inspection & Testing: Per API 6A, including hydrostatic, seat, and functional testing

For further specifications or to inquire about this equipment and ReflowX's logistics services, Please contact ReflowX at info@reflowx.com