API 6A Manual Gate Valve FLS series H2S sour service for choke manifold and christmas tree

The API 6A Manual Gate Valve, FLS Series, is a high-performance shut-off valve designed for reliable operation in critical oil and gas applications. With a working pressure range from 2,000 psi to 20,000 psi and nominal bore sizes from 1-13/16" to 7-1/16" (46 mm to 103 mm), this valve provides flexible solutions for choke manifolds, Christmas trees, and wellhead assemblies.

Engineered for H2S sour service in compliance with NACE MR0175, the FLS series gate valve is constructed from high-grade alloys to resist corrosion and ensure long service life under severe conditions. It delivers bubble-tight sealing, low operating torque, and excellent durability in oil, natural gas, and drilling mud applications.

• Standard Compliance: Fully conforms to API 6A requirements
• Service Range: Pressure rating from 2,000 to 20,000 psi; nominal sizes from 1-13/16" to 7-1/16"
• H2S Service: Suitable for sour gas service with NACE MR0175 compliance
• Application: Widely used in choke manifolds, Christmas trees, and wellhead equipment
• Materials: Available in material classes AA, BB, CC, DD, EE, FF, and HH
• Temperature Range: Operating temperature -46℃ to 121℃ (LU level)
• Specification Levels: PSL1 to PSL4; performance levels PR1 and PR2
• Performance: Metal-to-metal sealing ensures reliable shut-off and resistance to erosion
• Maintenance: Simple manual operation with field-serviceable design for reduced downtime

• Forged body structure ensures durability under high-pressure drilling conditions
• Field-proven sealing technology to minimize fluid leakage
• Multiple end connection types for diverse mud line configurations
• Cost-effective manual operation design with easy maintenance
• Suitable for both standard and sour gas service

• High-pressure mud circulation systems
• Drilling rigs and mud manifolds
• Wellhead service lines requiring manual shut-off
• Fluid control in choke and kill systems

• Gate Valves: Manual, Hydraulic, Slab Gate, Expanding Gate, API 6A Standard Designs
• Check Valves: Swing, Lift, Piston, API 6D Compliant Options
• Mud Valves: Manual Operation, High-Pressure Types (2"-12", up to 15000psi)
• End Connections: Flanged, Threaded, Butt Weld, Hammer Union, API Hub
• Material Classes: AA / BB / CC / DD / EE / FF for standard and sour service