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Actuated Butterfly Valve
Selection Guide

About Butterfly Valves

Butterfly valves are a common valve type used in large diameter pipes. They are typically used for basic on/off service, but can also be effectively used to throttle flow. They are operated with a simple 90 degree turn (qurter-turn) of a disc shaped obstructor. This disc has a slim profile around which flow passes when parallel to flow, but stops the flow in the when rotated 90 degrees to fill the entire opening of the valve.

ball valve construction diagram

Series Body Material
Seal Material
Conn. Type
Size Range
Max.
Pressure
Max.
Temp.
BFY
316L Stainless Steel
Seat: EPDM, Silcone, or Viton®
Tri-clamp or Butt weld
1/2" to 6"
110 PSIG
200°F
FE
PVC
Seat: EPDM
Wafer
1 1/2" to 12"
232 PSIG (1 1/2" to 2")
150 PSIG (2 1/2" to 8")
75 PSIG (10 to 12")
140°F
FK GRPP (glass reinforced polypropylene)
EPDM or Viton
Wafer or Lugged Flange
1 1/2" to 12"
150 PSIG (up to 10")
120 PSIG (12")
212°F
ST Epoxy Coated Ductile Iron
Seat: Buna-N or EPDM
Wafer or Lugged Flange
2" to 24"
225 PSIG (2" to 12")
160 PSIG (14" to 24")
Buna: 194°F
EPDM: 230°F
HP Carbon Steel or Stainless Steel
Seat: RPTFE
Wafer or Lugged (150# or 300#)
2" to 24"
285 PSIG (150#)
740 PSIG (300#)
450°F
XLD PFA (or PTFE) Lined Ductile Iron Wafer or Lugged
2" to 24"
150 PSIG 400°F
BFY Series

Sanitary Butterfly Valves

Key Features
  • ASTM 316L grade stainless steel body
  • Surface finish meets 3-A, FDA & USDA standards
  • 316L mirror finish disc provides an even flow preventing obstructions and restrictions
  • Opposing body bolt design prevents loosening between body sections due to vibration and operation, and provides positive sealing
  • Bolting is flush with body surface
  • FDA approved available options: silicone, EPDM and VITON®
  • 13-position, 304SS, spring loaded lever lock handle
  • Suitable for actuation with pneumatic, electric, or canister actuators
Specifications

Materials

  • Body: 316L Stainless Steel
  • Seat: EPDM, Silicone, or Viton®

End Connections

  • Tri-Clamp: 1/2" to 6"
  • Butt Weld: 1/2" to 6"

Temperature and Pressure

  • Max. Temperature:200°F
  • Max. Pressure: 110 PSIG
INFO
BUY
FE Series

PVC Actuated Butterfly Valves

Key Features
  • 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
Specifications

Materials

  • Body: PVC
  • Seat: EPDM

End Connections

  • ANSI 150# Wafer: 1 1/2" to 12"

Temperature and Pressure

  • Max. Temperature: 140°F
  • Max. Pressure:
    1 1/2" to 2": 232 PSIG
    2 1/2" to 8": 150 PSIG
    10" to 12": 75 PSIG
  • see pressure/temperature curve
INFO
BUY
FK Series

Polypropylene Butterfly Valve

Key Features
  • 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
Specifications

Materials

  • Body: GRPP (glass reinforced polypropylene)
  • Seat: EPDM or VITON

End Connections

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

Temperature and Pressure

  • Max. Temperature: 212°F
  • Max. Pressure:
    up to 10":
    150 PSIG
    12": 120 PSIG
  • see pressure/temperature curve
INFO
BUY
ST Series

Resilient Seat Butterfly Valve

Key Features
  • Silicone Free
  • Economy & high performance
  • One-piece body construction and self-centering disc.
  • Seat facing acts as flange gasket.
  • 3 shaft bushings support actuation.
  • Shaft sealing against external leakage
  • Meets MSS SP-67 and API-609 specs.
  • Complete line of accessories
Specifications

Materials

  • Body: Epoxy coated ductile iron
  • Seat: Buna-N or EPDM

End Connections

  • Wafer: 2" to 12"
  • Lugged: 2" to 24"

Temperature and Pressure

  • Max. Temperature:
    Buna-N: 194°F
    EPDM: 230°F
  • Max. Pressure:
    2" to 12":
    225 PSIG
    14" to 24": 160 PSIG
INFO
BUY
HP Series

High Performance Butterfly Valve

fire safe butterfly valve
Key Features
  • Class VI shut-off, Bubble tight
  • Advanced seat design: provides a bi-directional interference and pressure assisted seal. This provides maximum seal at high, medium and low pressures
  • Extended neck allows for up to two inches of pipe insulation
  • Positive seal packing design
  • Graphite impregnated or reinforced 316 SS bearings
  • High strength 17-4 ph SS stem for high-torque applications
  • Quick-release disc design
  • Offset disc taper pins
  • Integrally cast disc position stop

Specifications

Materials

  • Body: Carbon Steel or Stainless Steel
  • Seat: RPTFE

End Connections

  • Wafer: 2" to 12"
  • Lugged: 2" to 12"

Temperature and Pressure

  • Max. Tempurature: 450°F
  • Max. Pressure:
    150#: 285 PSIG
    300#: 740 PSIG
  • see Pressure/Temperature curve
INFO
BUY
XLD Series

Teflon Lined Butterfly Valve

Key Features
  • Substantial PFA liners for 3" through 12" and PTFE liners for 14" through 24"
  • Live loaded stem sealing system
  • Low torque
  • Improved disc design leading to less deflection at higher pressures and tighter in-line seal
  • ISO 5211 Actuator Mounting Pad for standardized actuator mounting
  • Live loaded self-adjusting shaft seal with triple O-ring protection
  • Blow-out proof shaft design for additional operator safety
  • Extended body and disc liner above the shaft seals
  • PTFE atmospheric seal
  • Fully encapsulated bottom shaft
  • Complete line of accessories

Specifications

Materials

  • Body: Epoxy Coated Ductile Iron
  • Seats: Teflon (PFA or PTFE)

End Connections

  • 150# ANSI Flange (Wafer): 2" to 24"
  • 150# ANSI Flange (Lugged): 2" to 24"

Temperature and Pressure

  • Max. Temperature: 400°F
  • Max. Pressure: 150 PSI
INFO
BUY
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