Overview

The FLS-R gate valve is our premier gate valve that utilizes the latest technology in component design and materials. The FLS-R has a unique ball-screw and lower balancing stem mechanism that greatly reduce the torque required for operation. Field-proven performance, combined with ease of use, makes this valve ideally suited for large-bore and high-pressure environments in production, manifold, and fracturing applications.

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

Specifications

Nominal Bore Size, in Working Pressures, psi [MPa]
2,000[13.8] 3,000[20.7] 5,000[34.5] 10,000[69.0] 15,000[103.5] 20,000[138.0] 30,000[206.8]
1-13/16 - - - FLS valve FLS valve FLS valve FLS and
FLS-R valve
2-1/16 FL and
FLS valve
FL and
FLS valve
FL and
FLS valve
FLS valve FLS valve FLS valve -
2-9/16 FL and
FLS valve
FL and
FLS valve
FL and
FLS valve
FLS valve FLS valve FLS valve FLS and
FLS-R valve
3-1/16 - - - FLS valve FLS valve FLS and
FLS-R valve
-
3-1/8 FL and
FLS valve
FL and
FLS valve
FL and
FLS valve
- - - -
4-1/16 - - - FLS valve FLS and
FLS-R valve
FLS and
FLS-R valve
-
4-1/8 FL and
FLS valve
FL and
FLS valve
FL and
FLS valve
- - - -
5-1/8 FLS valve FLS valve FLS valve FLS and
FLS-R valve
FLS and
FLS-R valve
- -
6-3/8 FLS valve FLS valve FLS valve FLS and
FLS-R valve
FLS and
FLS-R valve
- -
7-1/16 - - FLS valve FLS and
FLS-R valve
FLS and
FLS-R valve
- -
9 - - FLS and
FLS-R valve
FLS and
FLS-R valve
FLS and
FLS-R valve
- -
11 - - FLS and
FLS-R valve
- - - -

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; and product specification levels 1, 2, 3, 3G, and 4. For other designs, please contact Cameron.