FLS

Extreme service API 6A slab-style 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.

FLS Extreme Service API 6A Slab-Style Gate Valve

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

Nominal Bore Size, in	Working Pressures, psi [MPa]
Nominal Bore Size, in	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	-	-	-	-