Type-57IL Isolator Lug Butterfly Valve (3″–12″)

Type-57IL plastic butterfly valves are quarter turn valves designed for use in applications where 1-side flange removal may be periodically required. They feature a PVC body with fully molded in 316SS threaded lug inserts for connection to the mating flanges. Type-57IL butterfly valves permit one side flange removal, while maintaining full line pressure on the opposite side. 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-57IL butterfly valve is well suited for a wide variety of fluid flow applications. Can be pneumatically or electrically actuated.

NSF61

  • 3″-12″ PVC/PP/EPDM

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″ – 12″

Non-IL style lugged valves available for 1-1/2″ – 2-1/2″ and 14″-24″ sizes

Body:

PVC

Seats:

EPDM, FKM, and Nitrile

Seals:

Same as seating material

Models:

Lug Style

Operators:

Lever and Gear

Discs:

PVC, PP, and PVDF

Stems:

316 stainless steel, Titanium, Hastelloy C® ‡