Type 365 Lug Style Butterfly Valve


The Type 365 Butterfly Valve can be used universally as a shut-off or control valve in high purity water treatment or water filtration applications.

The manually-operated Type 365 PTFE-lined lug-style Butterfly Valve with PFA encapsulated disc includes key features such as ANSI 150 bolt patterns, pressure ratings up to 150 PSI and temperature ratings up to 400°F.

All valves have a one-piece disc and stem arrangement with a lock-in PFA encapsulation. All valves are cleaned and manufactured for Ultrapure water service.

Product Overview

Technical Data:

Size Range:

  • 2" - 12"

Pressure Rating:

  • PN10 (up to 150 PSI)

Temperature Rating:

  • up to 400oF

Joining Technology:

  • Lug style connection

Standard Ratings:

  • N/A


  • Body: Coated Ductile Iron
  • Disk: Perfluoroalkoxy (PFA)
  • Liner: Polytetrafluoroethylene (PTFE)

Fields of Application:

  • Ultrapure DI Water
  • Hot Ultrapure DI Water


  • ISO 5211 actuator mounting for gear operators and actuators
  • Self-lubricating bearings in the upper and lower stem journals
  • Precision-machined virgin PTFE liner is 100 mils minimum thickness
  • Precision PFA encapsulation 100 mils thick, bonded and interlocked to the one-piece disc stem, provides maximum permeation protection and prevents delamination
  • Belleville disc springs exert uniform loading through the pusher pressing the PTFE liner and the shoulder of the PFA encapsulated disc/stem together, resulting in a leak-free mechanical stem seal




  • Not Available