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Valves & Actuation
Type-57-LIS-Butterfly-Valve

Manual Plastic Butterfly Valves

Type-57 LIS Butterfly Valve (3" – 8")

Direct Replacement for ISO-5752 Short Pattern Metal Butterfly Valves

Type-57 LIS Butterfly valves are quarter turn plastic valves with equal percentage type flow characteristics. They provide moderate flow control and therefore can be used for both on/off and modulating service. Good tolerance to suspended solids but not recommended for use with slurries or debris. The Type-57 LIS butterfly valve is well suited for a wide variety of fluid flow applications. The Type-57 LIS butterfly valve conforms to ISO 5752 Short Pattern face to face dimensions. This allows the Type-57 LIS to directly replace metal valves conforming to the same standard. Available as ANSI B16.5 Wafer or ANSI B16.5 Lug models with 316SS drop-in lug inserts. Can be pneumatically or electrically actuated.

Ideal Applications Include:

Isolation Valves, Water Treatment, Water Features, Fountains, Aquariums, Landfills, Swimming Pools, Power Plants, Mining, Transportation

Specifications

Size:

Lever: 3" – 8"
Gear: 3" – 8"

Body:

PVC

Seats:

EPDM, FKM, or Nitrile

Seals:

Same as seating material

Models:

Wafer Style or Lug Style with 316SS lug inserts

Operators:

Lever and Plasgear

Discs:

PVC, CPVC, PP and PVDF

Stems:

316 stainless steel, Titanium, Hastelloy C®

Features/Benefits

  • Direct Replacement for metal valves conforming to ISO-5752 Short Face to Face dimensions.
  • Standard model has PVC body with PP disc for superior chemical and corrosion resistance as well as elevated temperature capabilities.
  • Non-wetted 316 SS stem has full engagement over the entire length of the disc and is totally isolated from the media.
  • Full seat design isolates the body and stem from the media and acts as mating flange gaskets
  • Integral body stops in valve body to prevent overtightening of mating flanges
  • Spherical disc design for improved CV's and superior durability
  • Integral locking lever handle w/21 position throttling plate
  • Plasgear™ operator – Industry first composite enclosure gear-operator
  • Integral ISO-5211 top mounting pad for actuation mounting
  • Polypropylene stem retainer to prevent stem
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