Soft seated Wafer butterfly valve for on-off control of water and other media compatible with the materials of construction. Wafer style valve sandwich mounts between customer supplied ANSI /ASME Class 150 and other international standard flanges. Unique wave line seat and disc shape, reduces the required torque and extends the life of the valve. The disc seat is vulcanized to a phenolic back-up ring guaranteeing positive control of seating torque while eliminating seat distortion. Precision machined 316SS disc with two-piece stem (shaft) construction, enhances the flow capacity of the valve and reduces turbulence. Stem utilizes PTFE/graphite bearings with V-type ring seals preventing leakage. Standard ISO5211 top mounting allows for easy air actuator, electric actuator or manual handle installation. Ductile iron body has a special epoxy coating for excellent weather and corrosion protection. This valve is a bare stem direct mount design, order optional hand lever or actuators separate.
| Pipe Size | 8 inch wafer design |
|---|---|
| Suitable Flanges | ANSI /ASME B16.5 Class150, B16.1 Class 125, EN1092 PN10, PN16, BS10 D, E, JIS B2239 10K, 16K |
| Flow Capacity | Cv 3584 (Cv = number of GPM of 60 °F water at 1 psi pressure drop) |
| Pressure Rating | 29 inHg vacuum to 230 PSI |
| Temperature Range | 0 to 248 °F (-18 to +120 °C) |
| Valve Body | Ductile iron, epoxy coating (seat facing acts as flange gasket) |
| Disc | 316 stainless steel |
| Disc Seat/Liner | EPDM |
| Shaft Seals | EPDM V-ring |
| Upper/Lower Stem | SS420 |
| Actuator Mount | ISO5211, F10, 22mm square stem |
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