Resilient Seated Butterfly Valves for oilfield, marine, industrial, and transportation applications | Series 70S

series 70S oil field and marine resilient seated butterfly valve

2" to 12"

  • Short Neck Wafer Style Notch Body
  • Cartridge Seat
  • Thin Profile Disc
  • ISO mounting and Shaft
  • Rated to 50 psi, 200 psi, 285 psi
  • Vacuum Rated to 29.92” of Mercury Gauge
  • Interchangeable with Demco Model NE-D
  • Features
  • Sales Brochures
  • Engineering
  • Torque & Cv
  • IOM
  • Valve & Actuator Packages
  • Slotted ISO 5211 top plate for flexibility of direct mounting options.
  • Environmental shaft seal keeps contamination from shaft bore.
  • Offset shaft retainers mechanically retain upper and lower shaft, ensuring a true blowout proof design.
  • Short neck notched valve body will allow it to be installed between ANSI 125/150 and Tank Trailers Manufacturing Association (TTMA) flanges.
  • Streamlined disc with no pins or screws in flow path.
  • Primary seal provides a smooth flow conduit and prevents media buildup in crevices normally found with traditional designs.
  • High strength upper and lower shafts, with triple shaft seals.
  • Two self lubricated bronze bearings to eliminate side loading.
  • Double D Drive for a positive disc/shaft connection, with no pins or bolts exposed to flow.
  • Proven pressure responsive 360° sealing method uses constant pressure between the machined radius on the disc and the flatted area of the seat, that eliminates the “squeeze” of the interference seat design our competition relies on.
  • Phenolic vulcanized cartridge seat, with primary and secondary seals provide no movement of the elastomer.
  • Two secondary shaft seals located inside the seat shaft holes.

For complete Features, please refer to the Flow Line Valve and Controls Brochures.

Consult factory.

The Series 70S 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.