FLS-R

Advantages

• Simple, reliable gate and seat design that promote ease of field service and minimal spare parts inventory
• Unique ball-screw design that allows for rolling friction in place of sliding friction
• Bidirectional design that provides flow direction versatility and increased service life
• Seal diameters and bearing areas of the seats that prevent trapping of pressure inside the valve cavity
• Lower stem that balances pressure thrust on upper stem to reduce operating torque, which prevents body cavity pressure buildup during operation and provides position indication
• Metal-to-metal stem backseat on both the balancing stem and valve operator stem for replacement of either stem seal with the valve cavity under pressure
• Backseat that can be energized to isolate the stem seal stuffing box from line pressure and the grease fitting port used to test the backseat integrity
• Two spring-loaded, pressure-energized, nonelastomeric lip seals for maximum protection against intrusion of particle contaminants into the valve cavity
• Seals that improve gate and seat service life, prevent damage to the body seat seal face, and improve valve performance at very low pressures
• Metal-to-metal sealing at the gate-to-seat and seat-to-body seals
• Forged body

For FL, FLS, and FLS-R gate valves, this chart represents typical valves for

• API material classes AA, BB, CC, DD, EE, FF, and HH (except FL)
• temperature ratings K, L, P, S, T, U, and V
• product specification levels 1, 2, 3, 3G, and 4.

For other designs, please contact us.