New Polypro Series Butterfly Valves

Product Announcement from Assured Automation

The FK Polypropylene Butterfly Valve Series offers superior strength and chemical resistance in highly corrosive environments. The special trapezoid shape of the liner and a serrated body cavity guarantee a bubble tight seal while keeping break-away torque at an absolute minimum. This versatile industrial valve features double self lubricating seals and direct mount actuator capability. These valves are available in line sizes of 1 1/2″ through 12″ with Wafer or Lugged flanged end connections.

Features & Benefits:

  • Standard ISO square dimensions for direct mounting of actuators
  • The disc/seat features a trapezoidal elastomeric liner to provide a bubble tight seal
  • The liner completely isolates the valve body from the process flow
  • The liner functions as a flange gasket on both sides of the valve
  • The body cavity features special channeling to prevent liner slippage and compression
  • PTFE seated o-ring shaft seals


  • Body: GRPP (Glass Reinforced Polypropylene)
  • Disc: PP (Polypropylene)
  • Seats & Seals: EPDM or Viton®

End Connections:

  • ANSI 150 Wafer: 1 1/2" to 12"
  • ANSI 150 Lugged: 2 1/2" to 12"

Temperature Range:

  • 32°F to 212°F

Pressure Range: (at 73°)

  • 150 PSIG (1 1/2" to 10")
  • 120 PSIG (12")

Typical Applications:

  • Industrial process piping systems
  • Double containment systems
  • Acid waste systems and wastewater
  • High purity systems
  • Municipal pressure and gravity piping systems
  • Plumbing and mechanical pipe systems
  • Electrical systems
  • Irrigation systems
  • Radiant heating systems