FLS Gate Valve

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

  • slab gate

  • 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, available in pressure ratings from 2,000 to 20,000 psi and bore sizes from 1 13/16 to 11 in. The FLS valve 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

FL Gate Valve

The FL gate valve is the standard product offering for 5,000-psi [34.5-MPa] working pressure. It has served the industry with distinction for many years across a range of application types worldwide and is well tested, both in assembly and component qualification testing. This gate valve also offers exceptional service life with minimal maintenance and provides a low life cycle cost compared to other 5,000-psi valve designs.

Many of the features of the FL valve design are common to our Type F gate valve, which was introduced to the market in 1958: forged construction, metal-to-metal sealing, a slab gate, and design simplicity. In other areas such as seat seals and stem seals, the FL valve design takes advantage of our latest technology in materials and seal design.

Advantages

  • Metal-to-metal sealing for gas-tight sealing without sealant

  • Reliability through simplicity of design—one-piece floating seats and a floating slab gate provide reliable performance and minimize sealing interfaces

  • Symmetrical bidirectional sealing to prevent trapping of pressure inside the valve cavity

  • Spring-loaded and pressure-energized stem seal that requires no longitudinal preload or precise spaceout is required

  • Single-pressure, energized PEEK lip seal in the seat-to-body interface

  • The lip seal in the FL valve performs several functions

  • Enhanced sealing integrity at very low differential pressures where low bearing stresses tend to limit the effectiveness of the metal-to-metal seal.

  • Qualification to API Spec 6A, Annex F (PR-2) and Annex I (Class II).