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Butterfly Valves

  • Size Range:2" - 48" Wafer
    2" - 48" Lug Types
  • Flange
    Compatibility:ANSI CL150 and CL125
    DIN and JIS on application
  • Body Types:Wafer
    Full Faced Wafer
    Threaded Lug
Literature PDF
Nil-Cor Butterfly Valve

Valve Design:

Nil-Cor butterfly valves feature a double-offset disc design normally found only on expensive high performance types. This design allows the disc to move off the seat with a "camming" action, reducing break-away torque and seat wear. The 360° uninterrupted disc seal eliminates the leak path at the shaft hubs found on PTFE and rubber-lined competitors valves. A super-strong 17-4 ph shaft encapsulated with graphite reinforced vinyl ester resin eliminates corrosion and assures long trouble-free operation.

The Composite Advantage!

Nil-Cor uses premium epoxy novolac vinyl ester resin and a special blend of fillers, reinforcement and curing agents to produce an inherently corrosion resistant valve. Without the need for expensive liners that eventually swell or permeate, Nil-Cor valves deliver a long, maintenance-free service life.

External corrosion is a leading killer of lined metal valves but Nil-Cor’s vinyl ester body and Hastelloy® hardware can stand up to just about any nasty environment on the planet.

Nil-Cor butterfly valves weigh less than 1/3 that of similarly sized metal valves. This means reduced handling and shipping expenses and easier installation.

So forget old-fashioned iron butterfly valves and crack-prone plastic valves. Go with the leader—the rugged advanced composite butterfly valves from Nil-Cor!

Double-Offset Disc Butterfly Valves

  • Nil-Cor Series 300HD / 310HD double-offset disc design

    The Nil-Cor Series 300HD / 310HD double-offset disc design allows the disc to move off the seat with a "camming" action, reducing break-away torque and seat wear. The 360° uninterrupted disc seal eliminates the leak path at the shaft hubs found on PTFE and rubber-lined valves. A strong Stainless Steel shaft encapsulated with graphite or fiberglass-reinforced vinyl ester resin eliminates corrosion and assures long trouble-free operation.

  • Series 300HD / 310HD
    Series 300HD / 310HD
    Size Range: 3" - 12" Wafer
    3" - 12" Lug Types
    Flange Compatibility: ANSI CL150 and CL125
    DIN and JIS on application
    Body Types: Light-weight Wafer
    Full Faced Wafer
    Threaded Lug
  • Series 310HD
    Series 310HD
    Size Range: 14" - 48" Wafer
    14" - 48" Lug Types
    Flange Compatibility: ANSI CL150 and CL125
    DIN and JIS on application
    Body Types: Full Faced
    Threaded Lug

PTFE and Elastomer-Lined Butterfly Valves

Featuring Bi-Directional Shut-off

  • Series 700 Elastomer-Lined
    Series 700 Elastomer-Lined
    Size Range: 2”-12” Wafer and Lug
    Flange Drilling: ANSI CL 150
    Body Types: Full Faced Wafer Threaded Lug
    Body Material: Glass Fiber-reinforced Vinyl Ester
    Liner Materials: EPDM, Hypalon
    Disc Materials: EPDM/DI, Hypalon/DI, 316 SS
  • Series 710 PTFE-Lined
    Series 710 PTFE-Lined
    Size Range: 2”-12” Wafer and Lug
    Flange Drilling: ANSI CL 150
    Body Types: Full Faced Wafer Threaded Lug
    Body Material: Glass Fiber-reinforced Vinyl Ester
    Liner Materials: PTFE, UHMWPE
    Disc Materials: PFA/SS, 316 SS, Titanium, UHMWPE/SS

Nil-Cor's range of high-performance butterfly valves for industrial flow control and liquid handling. Our valve solutions include double-offset, triple-offset, and resilient-seated butterfly valves, available in wafer-style, lug-style, and flanged configurations. Our valves are engineered for efficiency, reliability, and zero-leakage operation, with options for manual and actuated control. Contact us for more information on our versatile valve products.