Overview

The FLS gate valve is part of the F Series of valves, which have been supplied for production and drilling service since 1958. Many of the features of the FLS are common to our original Type F gate valve, such as full- and internally flushed bore and forged construction; metal-to-metal sealing; a slab gate; and design simplicity. In other areas such as seat seals and stem seals, the FLS design takes advantage of our latest technology in materials and seal design.

The Cameron FLS gate valve is widely recognized as a high-quality valve for severe applications. It is a fullbore, through-conduit valve available in pressure ratings from 2,000 to 20,000 psi and bore sizes from 1 13/16 to 11 in. The FLS is our standard valve for critical requirements, including extreme sour and subsea applications. In addition, it can be fitted with a wide range of our actuators.

Advantages

  • Metal-to-metal sealing
  • Reliability through simplicity of design
  • Bidirectional sealing
  • Stem backseat
  • Nonelastomeric, spring-loaded, pressure-energized stem seal that requires no longitudinal preload or precise spaceout
  • Innovative seat design
  • Lip seals that perform several functions:
    • Serving as added barrier against contaminants and debris
    • Maintaining contact between the gate and seats, eliminating body cavity clearance while retaining downstream sealing function of the slab gate
    • Enhancing sealing integrity at very low differential pressures, where low bearing stresses tend to limit the effectiveness of the metal-to-metal seal
  • Qualification testing to API 6A, Annex F (PR-2) and Annex I (Class II)
  • Optional torque multiplier

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/FLS-R 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.