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 3-layer coating Epoxy/Epoxy/PUR for excellent weather and corrosion protection. This valve is a bare stem direct mount design, order optional hand lever or actuators separate.
Pipe Size
12 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 8498 (Cv = number of GPM of 60 °F water at 1 psi pressure drop)
Pressure Rating
29 inHg vacuum to 145 PSI
Temperature Range
0 to 248 °F (-18 to +120 °C)
Valve Body
Ductile iron, 3-layer Epoxy/Epoxy/PUR 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/F12, 27mm square stem
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Customer
Technical