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.
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!
Nil-Cor Series 300/310 double-offset disc design which 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.
| 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 |
| Size Range: | 14" - 42" Wafer 14" - 42" Lug Types |
| Flange Compatibility: | ANSI CL150 and CL125 DIN and JIS on application |
| Body Types: | Full Faced Threaded Lug |
Featuring Bi-Directional Shut-off
| 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 |
| 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 |



