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

Product Overview

1. The API 6A Hydraulic Gate Valve, FLS Series, is a high-performance valve designed for H2S sour service and severe oil and gas applications. Utilizing hydraulic pressure to control valve opening and closing, it provides operators with fast, reliable, and remote operation for enhanced safety and efficiency.

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   Manufactured in compliance with API 6A, API Q1, and ISO 9001 standards, the hydraulic gate valve is widely used in choke manifolds, Christmas trees, and wellhead assemblies. Constructed from forged or cast AISI 4130/410 alloy steels, with optional materials such as Inconel or duplex stainless steel, it offers outstanding strength, corrosion resistance, and long service life under extreme conditions.

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   With a robust design featuring metal-to-metal sealing, bi-directional flow shut-off, and low operating torque, the FLS Series hydraulic gate valve ensures maximum reliability for high-pressure, high-temperature, and sour gas environments.

Key Features

1. Standard Compliance: API 6A certified; manufactured under API Q1 and ISO 9001 quality systems
2. Hydraulic Actuation: Enables remote and rapid operation, reducing manual intervention and improving operational safety
3. Service Range: Suitable for choke manifolds, Christmas trees, and critical wellhead systems in severe service conditions
4. High Pressure / Temperature: Designed to withstand working pressures up to 20,000 psi and temperatures from -46℃ to 121℃
5. H2S Sour Service: Compliant with NACE MR0175 for safe and reliable sour gas applications
6. Materials: Standard AISI 4130/410 alloy steels; optional Inconel or duplex stainless steel for enhanced corrosion resistance
7. Sealing System:

Metal-to-metal sealing between gate and seat for zero leakage

Bi-directional sealing ensures reliable shut-off in both flow directions

Stem sealing with PTFE/R-PTFE or graphite for reduced torque and adaptability to high temperatures

8. Design Advantages: Precisely ground gate and seat, expansion flat valve structure for tight sealing, and field-serviceable components for easier maintenance

Advantages

1. Forged body structure ensures durability under high-pressure drilling conditions

2. Field-proven sealing technology to minimize fluid leakage

3. Multiple end connection types for diverse mud line configurations

4. Cost-effective manual operation design with easy maintenance

5. Suitable for both standard and sour gas service

Applications

1. High-pressure mud circulation systems

2. Drilling rigs and mud manifolds

3. Wellhead service lines requiring manual shut-off

4. Fluid control in choke and kill systems

Available Models

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

Product Specifications