1. Types of Butterfly Valves
Slimseal (Wafer Type)
Integrally molded elastomer liner (fit-and-forget design).
Sizes: 50 mm – 600 mm.
Pressure ratings: PN 10, PN 16, PN 20.
Actuation: Lever, gear, pneumatic/electric actuators.
Chemseal
Hypalon liner for corrosive fluids (acids, alkalis, inorganic salts).
Body: Cast iron/ductile iron with epoxy coating.
Pressure rating: Up to PN 16.
Cleanseal
Hygienic design for food, beverage, and pharmaceutical service.
Food-grade EPDM or white nitrile rubber liner.
Sizes: 50 mm – 300 mm.
Pressure rating: 16 bar (EPDM), 14 bar (Nitrile).
White epoxy coating.
Lined Butterfly Valves (PFA/PTFE lined)
For severe corrosive duty.
Liner: PFA with TFM/PTFE seal.
CV (flow coefficients), break torque charts, and pressure–temperature ratings available.
Disc inserts with PFA lining for durability.
Slimseal (Wafer Type)
Integrally molded elastomer liner (fit-and-forget design).
Sizes: 50 mm – 600 mm.
Pressure ratings: PN 10, PN 16, PN 20.
Actuation: Lever, gear, pneumatic/electric actuators.
Chemseal
Hypalon liner for corrosive fluids (acids, alkalis, inorganic salts).
Body: Cast iron/ductile iron with epoxy coating.
Pressure rating: Up to PN 16.
Cleanseal
Hygienic design for food, beverage, and pharmaceutical service.
Food-grade EPDM or white nitrile rubber liner.
Sizes: 50 mm – 300 mm.
Pressure rating: 16 bar (EPDM), 14 bar (Nitrile).
White epoxy coating.
Lined Butterfly Valves (PFA/PTFE lined)
For severe corrosive duty.
Liner: PFA with TFM/PTFE seal.
CV (flow coefficients), break torque charts, and pressure–temperature ratings available.
Disc inserts with PFA lining for durability.
2. Key Features
Integrally Molded Seat: Eliminates leakage and liner displacement.
Bubble-Tight Shutoff in both flow directions.
O-ring Shaft Seals: Prevents leakage to the atmosphere.
Low Torque Design: Reduces actuator size & cost.
Bi-directional Sealing: Works under vacuum and pressure conditions.
Corrosion Resistant Coating: Epoxy or other specialized finishes.
Gasket-Free Flange Sealing: Built-in flange gasket simplifies installation.
Integrally Molded Seat: Eliminates leakage and liner displacement.
Bubble-Tight Shutoff in both flow directions.
O-ring Shaft Seals: Prevents leakage to the atmosphere.
Low Torque Design: Reduces actuator size & cost.
Bi-directional Sealing: Works under vacuum and pressure conditions.
Corrosion Resistant Coating: Epoxy or other specialized finishes.
Gasket-Free Flange Sealing: Built-in flange gasket simplifies installation.
3. Technical Specifications
Sizes: 50 mm – 600 mm (larger sizes available in lined valves).
Pressure Ratings: PN 10, PN 16, PN 20.
Temperature Range:
Standard elastomer liners: –10 °C to +120 °C.
Hypalon (Chemseal): Up to +150 °C.
PTFE/PFA lining: Up to +200 °C.
End Connections: Wafer type, Lugged type, Flanged type.
Operation: Lever, Gear operator, Pneumatic actuator, Electric actuator.
Sizes: 50 mm – 600 mm (larger sizes available in lined valves).
Pressure Ratings: PN 10, PN 16, PN 20.
Temperature Range:
Standard elastomer liners: –10 °C to +120 °C.
Hypalon (Chemseal): Up to +150 °C.
PTFE/PFA lining: Up to +200 °C.
End Connections: Wafer type, Lugged type, Flanged type.
Operation: Lever, Gear operator, Pneumatic actuator, Electric actuator.
4. Materials of Construction
Body: Cast Iron / Ductile Iron / WCB / Stainless Steel.
Disc: Stainless Steel, Ductile Iron, Duplex SS, or PFA-lined.
Liner/Seat: Nitrile, EPDM, Hypalon, Neoprene, PTFE, PFA.
Shaft: Stainless Steel or high-strength alloy.
Coating: Fusion bonded epoxy (FBE), special epoxy for Cleanseal.
Body: Cast Iron / Ductile Iron / WCB / Stainless Steel.
Disc: Stainless Steel, Ductile Iron, Duplex SS, or PFA-lined.
Liner/Seat: Nitrile, EPDM, Hypalon, Neoprene, PTFE, PFA.
Shaft: Stainless Steel or high-strength alloy.
Coating: Fusion bonded epoxy (FBE), special epoxy for Cleanseal.
5. Advantages
Compact & lightweight → reduces piping loads.
Quick quarter-turn operation.
Reliable sealing in water, steam, chemicals, oils, gases, slurries.
Easy to install between standard flanges.
Long service life with minimal maintenance.
Compact & lightweight → reduces piping loads.
Quick quarter-turn operation.
Reliable sealing in water, steam, chemicals, oils, gases, slurries.
Easy to install between standard flanges.
Long service life with minimal maintenance.
6. Applications
Water supply & treatment
Chemical & petrochemical industries
HVAC systems
Food & beverage
Pharmaceuticals
Pulp & paper
Marine & desalination
Power plants
Whether you’re sourcing a single valve for replacement or procuring in bulk for a large-scale project, Industrial Engineering Syndicate is fully equipped to meet your needs with competitive pricing and prompt delivery.
• Retail Supply: Immediate availability for small quantities.• Project Procurement: End-to-end support for bulk purchases with documentation and certification as required.
Industrial Engineering Syndicate – Supplying Quality. Delivering Trust.
Water supply & treatment
Chemical & petrochemical industries
HVAC systems
Food & beverage
Pharmaceuticals
Pulp & paper
Marine & desalination
Power plants
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