API 6A Gate Valves consist of the following type: PFF Gate valves, FC Style Gate Valves, FLS Valves, Hydraulic Valves (HCR), and Expanding gate valves.
- Full-bore design in order to eliminate pressure drop and eddy current,
- The unique sealing to reduce the switch torque
- The metal seal between bonnet & body and gate & seat
- Surface spray welding hard alloy, good performance on abrasion resistance, corrosion resistance.
- Seat ring is fixed with plate, keep well steady
- Back seal structure steam in order to replace the seal ring of the stem with pressure
- Grease injection valve on bonnet side
- pneumatic (hydraulic) actuator available
Expanding gate valve
- Fission expanding structure
- Low torque or low wear during the switch
- Metal seal between bonnet and body
- PR1, and PR2 certification can be provided for all types of gate valve
- Metal seal for each type, improves the sealing performance.
- stem and cover designed with backseat sealing structure is easy to take pressure change
- valve stem packing.
- of high-quality alloy steel forgings body, no perforation design
- Sealing surface spray weld hard alloy, with corrosion resistance, resistance to erosion, and wear resistance performance.
- Use spring preload load in the disc and seat, completely realize two-way seal.