Butterfly Valves
Technical Specifications (Double Eccentric Butterfly Valves)
- Standards: EN 593; AWWA C504/C516; leakage per EN 12266-1 Rate A
- Nominal Diameters: DN 150 – DN 2600 mm
- Pressure Ratings: PN10 / PN16 / PN25 / PN40
- Face to face: EN558 Series 14 and Series 13
- Body Material: Ductile iron EN-GJS-500-7 / WCB
- Disc: Ductile iron with epoxy or stainless steel
- Seat: SS304 / SS309 / SS316 Welded
- Shaft: Stainless steel SS420 / SS431 / SS304 / SS316 / Duplex
- Bearings: Self-lubricating bronze
- Bonnet/Cover: Sealed trunnion bushings
- Stem Sealing: Multiple O-rings, field-replaceable
- End Connections: Flanged per EN 1092-2 drilling PN10/16/25/40
- Operation: Worm-gear, handwheel, or electric/pneumatic actuator; position indicator
- Coating: Fusion-bonded epoxy (FBE) min. 250 μm, inside & outside
- Approvals: Potable-water compliant (e.g., WRAS/ACS) when specified
- Temperature Range: Typically -10 °C to +80 °C (elastomer dependent, can be improved upon request)
- Applications: Potable water, wastewater, irrigation, industrial services
- Options: Bypass, locking device, limit switches, torque limiter
Technical Specifications (Concentric Flanged Butterfly Valves)
- Standards: EN 593; AWWA C504/C516; leakage per EN 12266-1 Rate A
- Nominal Diameters: DN 50 – DN 2000 mm
- Pressure Ratings: PN10 / PN16 / PN25
- Face to Face: EN558 Series 14, Series 13 and Series 20
- Body Material: Ductile iron EN-GJS-500-7
- Disc: Ductile iron / stainless steel / aluminum bronze
- Seat: Molded-in or replaceable resilient seat (EPDM/NBR) or PTFE
- Shaft: Stainless steel AISI 420 / 431 / 304 / 316 / Duplex
- Stem Sealing: O-rings, field-serviceable
- End Connections: Flanged EN 1092-2
- Operation: Lever, gearbox, actuator-ready ISO 5211 top flange
- Coating: FBE min. 250 μm
- Approvals: WRAS/ACS on request
- Temperature Range: -10 °C to +70 °C (medium dependent, can be improved upon request)
- Applications: Potable water, wastewater, light industrial
- Options: locking device, pneumatic actuator, electric actuator, limit switches
Technical Specifications (Wafer-Lug Butterfly Valves)
- Standards: EN 593; AWWA C504/C516; leakage per EN 12266-1 Rate A
- Nominal Diameters: DN 25 – DN 1400 mm
- Pressure Ratings: PN10 / PN16 / PN25
- Face to Face: EN558 Series 14, Series 13 and Series 20
- Body Material: Ductile iron EN-GJS-500-7
- Disc: Ductile iron / stainless steel / aluminum bronze
- Seat: Molded-in or replaceable resilient seat (EPDM/NBR) or PTFE
- Shaft: Stainless steel AISI 420 / 431 / 304 / 316 / Duplex
- Stem Sealing: O-rings, field-serviceable
- End Connections: Wafer or Lug
- Operation: Lever, gearbox, actuator-ready ISO 5211 top flange
- Coating: FBE min. 250 μm
- Approvals: WRAS/ACS on request
- Temperature Range: -10 °C to +70 °C (medium dependent, can be improved upon request)
- Applications: Potable water, wastewater, light industrial
- Options: locking device, pneumatic actuator, electric actuator, limit switches