Manual Plastic Butterfly Valves

Type-57 Butterfly Valves (1-1/2" - 14")

Type-57 butterfly valves are quarter turn 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 butterfly valve is well suited for a wide variety of fluid flow applications.

Design Features

Flange Stopper - Prevents over-compressing liners due to improper installation
Absorption Channel - Never worry about an over-tightened liner causing excessive stem torque
Spherical Disc - Gain higher Cv and extended valve life cycle as a result of new disc design
Plasgear Plastic Gear Operator - The first industrial, non-metallic gear box - Offers superior corrosion resistance

Product Advisory - Butterfly Valves Lever Handles

Product Certifications

Ideal Applications Include:

Isolation valves, control valves, chemical processing, water treatment, water features, fountains, aquariums, landfills, swimming pools, power plants, mining, transportation

Specifications

Size:

Lever: 1-1/2" – 8"
Gear: 1-1/2" – 14"

Bodies:

PVC, PP and PVDF

Seats:

EPDM, FKM, and Nitrile

Seals:

Same as seating material

Models:

Wafer Style, Lug Style

Operators:

Lever and Gear

Discs:

PVC, PP, PVDF and CPVC

Stems:

403 and 316 stainless steel, Titanium, Hastelloy C^® ‡

Features/Benefits

Standard model (1-1/2" – 14") has PVC body and PP disc for superior chemical resistance and elevated temperature capabilities
316/403 stainless steel shaft has full engagement over the entire length of the disc and is a non-wetted part
Only solid and abrasion-resistant plastic disc and elastomeric liner are wetted parts
ISO bolt circle on top flange–no body or stem modifications required for accessories
Stem retainer–PP retainer to prevent stem removal
Seat over tightening protection–Molded body stops and seat stress relief area
Spherical disc design offers increased Cv, ultimate sealing and high cycle life
18 position throttle plate for lever handle style
NSF 61-G Certified
ABS Poduct Type Approved for use in Marine and Offshore applications

Actuation

Options

Resources

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