FLS-DAN

API 6A double-acting actuated drilling gate valve

For positive control of gate valves for many drilling applications, Cameron offers the FLS-DAN gate valve. This design is a combination of the field-proven FLS extreme service API 6A slab-style gate valve with a double-acting hydraulic actuator. The FLS gate valve is widely recognized as a high-quality valve for severe service applications. The fullbore, through-conduit FLS-DAN gate valve is available in standard double flange, threaded-end, and special block body configurations.

The gate valve is fitted with a balancing lower stem to work with a double acting hydraulic actuator to provide positive, reliable control through the entire stroke of the valve. Should a failure of hydraulic power occur, this valve will remain in position.

FLS-DAN API 6A Double-Acting Actuated Drilling Gate Valve

Advantages

Double acting actuator that requires hydraulic power to both open and close, providing positive control during operations
Balancing stem that allows gate to stay in position unless hydraulic power is supplied to actuator to positively open or close valve
Forged valve body available in pressure ratings from 3,000 to 15,000 psi and bore sizes from 1 13/16 to 4 1/16 in
Positive metal-to-metal sealing (gate-to-seat and seat-to-body)
Bidirectional flow that provides usage versatility and increased service life
Two spring-loaded, pressure-energized, nonelastomeric lip seals between each seat and body, which assist in low-pressure sealing and protect against intrusion of particle contaminants into the body cavity and seal areas
Stem seal design that covers a wide range of pressures, temperatures, and fluids encountered in wellhead and manifold service
Metal-to-metal bonnet seal
Stem that can be backseated to allow stem seal replacement with the valve under pressure
Grease injection fitting downstream of stem back seat for increased safety and fitting in bonnet that helps eliminate body penetration
Manual locking screw that maintains the gate (valve) in the closed position without any operating pressure in the actuator
Use of socket head cap screws to tie down actuator head flanges, reducing area exposed to corrosive environments