The FLS-DAN gate valve offers the following benefits: A double-acting actuator that opens and closes with hydraulic power, ensuring positive control throughout operations. The balancing stem allows the gate to remain in position unless hydraulic pressure is applied to the actuator to positively open or close the valve. There are forged valve bodies available with pressure ratings ranging from 3,000 to 15,000 psi and bore diameters ranging from 1 13/16 to 4 1/16 in. Positive metal-to-metal sealing (gate-to-seat and seat-to-body), bidirectional flow for increased service life and versatility.Two spring-loaded, pressure-energized, nonelastomeric lip seals that help in low-pressure sealing and guard against particle contamination of the body cavity and seal regions are located between each seat and body. A stem seal design that can withstand a wide variety of pressures, temperatures, and fluids used in wellhead and manifold duty.