Butterfly Valves
Wafer / lug / flanged butterfly valves for isolation and flow control duty.
Technical data sheet
Butterfly Valve (Wafer / Lug / Flanged)
Concentric (resilient seated) and double-offset butterfly valves engineered for isolation and flow control in water, wastewater, HVAC, fire-fighting, and process duty. Lever, gear, electric, and pneumatic actuator options.
Characteristics
| Nominal size (DN) | mm | 40 to 1200 |
|---|---|---|
| inch | 1½ to 48 | |
| Pressure rating | — | PN6 / PN10 / PN16 / PN25 / ANSI 125 / ANSI 150 |
| Body | — | Cast iron (CI) / Ductile iron (DI) / Cast steel / SS 316 |
| Disc | — | DI / SS 304 / SS 316 / Bronze / Aluminium bronze |
| Seat | — | EPDM (water) / NBR (oil) / Viton / PTFE-lined |
| Type | — | Wafer / Lug / Double-flanged / Double-offset |
| Operation | — | Lever (≤ DN150) / Gear (≥ DN200) / Electric / Pneumatic |
| Temperature | °C | -10 to +120 (EPDM); -10 to +90 (NBR) |
| Standards | — | IS 13095 / EN 593 / API 609 / ISO 5752 |
| Applications | Use | Water supply, Wastewater, HVAC, Fire fighting, Process, Pulp & paper, Mining |
Material of Construction — Body & internals
- Body: Cast iron CI / Ductile iron DI / Cast steel / SS 316
- Disc: Ductile iron / SS 304 / SS 316 / Aluminium bronze
- Seat: EPDM / NBR / Viton / PTFE-lined
- Stem: Stainless steel SS 410 / SS 316
- Bushing: PTFE / bronze
- O-ring: EPDM / NBR / Viton
Material of Construction — Actuator & accessories
- Lever: Aluminium alloy / cast iron, 10-position locking notch
- Gearbox: Worm gear, weatherproof IP65
- Electric actuator: On/off or modulating (4–20 mA), IP67
- Pneumatic actuator: Rack-and-pinion or scotch yoke, double / single acting
- Limit switches: Open/close indication (with electric / pneumatic)
- Position indicator: Visual indicator on stem top
- Top-flange: ISO 5211 — universal actuator mounting
Salient Features
- Concentric (resilient seated) — 100% bubble-tight bi-directional shutoff
- Double-offset variant for high-pressure & temperature duty
- Compact face-to-face dimension (per ISO 5752 / EN 558)
- Disc dynamically balanced — low torque operation
- Replaceable elastomer seat (EPDM / NBR / Viton)
- Top-flange mounting per ISO 5211 — actuator-ready
- Lever-operated up to DN150; gear-operated DN200+
- Electric (24 V DC / 230 V AC) and pneumatic actuator options
- Long service life — typically 50,000+ cycles
- Conforms to IS 13095 / EN 593 / API 609
Applications
- Water supply isolation & flow control
- Wastewater treatment plants (STP / ETP)
- HVAC chilled / hot / condenser water lines
- Fire-fighting mains (with UL/FM-listed variants)
- Industrial process water
- Pulp & paper plants
- Mining slurry (lined variants)
- Building services & plumbing mains
Specify line size, pressure, temperature, fluid, & end connection (wafer / lug / flanged) for selection.
Use spool piece between back-to-back butterfly valves to allow disc full opening.
Have a question? Drop us a line.
Share your duty point — head, flow, voltage, application — and our engineering team will match the right configuration.
All configurations & variants
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Butterfly Valves for India, UAE, Saudi Arabia & Export Markets
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