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Asahi/AmericaModel Type-57 LIS -Thermoplastic Butterfly Valves

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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.

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  • 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
  • Sizes: Lever: 3" - 8"
  • Gear: 3" - 8"
  • Models: Wafer or Lug style
  • Operators: Lever and gear
  • Body: PVC
  • Discs:  PVC,  PP and PVDF
  • Seats: EPDM, FKM and Nitrile®
  • Seals: EPDM, FKM and Nitrile®
  • Stems: 316 stainless steel, titanium, Hastelloy C®‡
  • Series 79 Pneumatic
  • Series 92 & 94 Electric
  • Series 83 Electromni
  • Chemical Processing
  • Water & Wastewater
  • Landfills
  • Irrigation
  • Food Processing
  • Mining
  • 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® ‡