Key Features:

Metal-to-Metal Seals

• Seals are stable, thermally insensitive, and environmentally resistant
• Utilized in the gate/seat, body/ bonnet, and stem/bonnet backseat

Selective Backseat

• Provides unparalleled safety during venting, lubrication, and stem packing replacement
• Premature backseating is prevented by a positive stop in the bearing cap that controls stem travel
• Allows stem packing replacement without removing valve from service
• Backseat can be employed without shifting position of the gate

Slab Gate

• Excessive force is not required to close and seal the valve
• Potential for valve cavity pressure lock is eliminated
• Assures smooth operation during extreme thermal cycles

Floating Seats

• Allows bi-directional use
• Spring-energized seals pre-load the seats to maintain constant contact with gate, ensuring low pressure sealing
• Requires no lubrication to seal

Threaded Packing Gland

• Transfers stem packing loads to the bonnet, protecting the bearing assemblies
• Accommodates replacement of bearings and shear pin at full pressure differential

No Body Penetrations

• A single lubrication injection port is located outboard of the backseat in the each bonnet allowing cavity lubrication or venting of trapped pressure after backseat operation

In-line Repairability

• Gates, seats, stems and other critical parts are easily replaced without the use of special tools
• Stem packing can be replaced while the valve is under pressure