- One-piece ribbed wafer and lugged body is polyester coated as standard, for a superior appearance and excellent resistance to external corrosion.
- Heavy duty ISO 5211 top plate is slotted for ease of actuation and engineered to accept direct mounting of operators.
- Streamlined design offers higher Cv and lower pressure drop.
- Triple shaft seals support the primary seal on machined radius of the disc. Our triple shaft seals ensure a dry stem design.
- Field replaceable, phenolic bonded cartridge seat provides no movement of the elastomer, which is a common failure point of many resilient flexible seat designs.
- Torque fluctuation is eliminated by our phenolic bonded elastomer seats.
- A high strength Double D drive ensures a positive shaft-to-disc connection.
- No pins or bolts are exposed to flow.
- Disc shaft holes, surrounded by a 360° machined radius, are in constant contact with the flatted area of the seat.
- The design is far superior to resilient flexible seat designs that depend on the "squeeze" effect of the disc and seat interference, which allows leakage behind the seat and up the shaft.
- The Flow Line shaft seal is achieved through a continuous pressure exerted from the flatted area of the seat to the machined radius of the disc.
For complete Features, please refer to the Flow Line Valve and Controls Brochures.
The Series 70/71 can be fully automated throughout its size range, by either pneumatic or electric actuators. Flow Line’s extensive automation capabilities are due to the fact that we developed our actuator and accessories from the ground up. Our automation products were designed with the torque needed to be able to automate all Flow Line valves. Because all Flow Line valves are kept up to the latest ISO 5211 standards, there is no need for brackets and couplers when using Flow Line actuators on Flow Line valves. We give you a single source for quality automation packages.