Wafer Type Double Offset Butterfly Valve
Resistant
Sealing
Operation
Long Life
Alis Valves is a trusted Wafer Type Double Offset Butterfly Valve Manufacturer & Supplier in India, offering high-performance butterfly valves for medium to high-pressure industrial applications. Designed with a compact wafer body and double offset disc geometry, these valves provide reduced seat wear, low operating torque, reliable shut-off, and extended service life for oil & gas, petrochemical, power generation, water treatment, chemical processing, and HVAC industries.
Specifications
Size Range
DN50 to DN500 (2" to 20")
Body Material
Ductile Iron, Carbon Steel (WCB), SS304, SS316
Seat Material
PTFE, RPTFE, EPDM, NBR, Metal Seat (Optional)
Leakage Class
API 598 / ISO 5208
Pressure Rating
PN10, PN16, PN25, PN40 / ANSI Class 150 & 300
Disc Material
SS304, SS316, Duplex Stainless Steel
Temperature Range
-20°C to +250°C (Up to +550°C with Metal Seat)
Design Standards
API 609, ASME B16.34, ISO 5211
Product Images
Frequently Ask Questions
It is a wafer-style butterfly valve with a double-offset disc and shaft arrangement, designed to reduce seat contact during operation and provide reliable isolation with lower operating torque.
The valve has a compact body installed between compatible pipeline flanges, rather than having integral flanges on the valve body.
Alis Valves manufactures and supplies Wafer Type Double Offset Butterfly Valves for oil & gas, petrochemical, power generation, water treatment, chemical processing, HVAC, and other industrial applications.
The double-offset design causes the disc to move away from the seat early during opening, reducing rubbing, friction, and seat wear.
Yes. The standard listed temperature range is -20°C to +250°C, while the metal-seat configuration can be used up to approximately +550°C, subject to the complete valve design and application conditions.
