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Asahi/America - Model Type-57 LIS -Thermoplastic 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.
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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® ‡
