Description
The industrial butterfly valve is a high-performance polymeric valve that uses a rotating disc to start, stop, or regulate flow. Thanks to specially selected materials for the disc, seat (liner), shaft, and seals, it offers outstanding resistance to corrosive, acidic, and aggressive chemicals – making it the ideal alternative to metal valves in harsh environments.
Vispar industrial butterfly valves are available in two main categories:
- Concentric (Zero Offset) – Standard, cost-effective design
- Double Offset (High-Performance) – Superior sealing and longer service life
Double Offset (High-Performance) Industrial Butterfly Valve
The double-offset design dramatically reduces seat wear and operating torque while providing bubble-tight shut-off even after thousands of cycles.
Key advantages of double offset
- First offset: Shaft is located slightly behind the disc centerline → minimal seat contact during travel
- Second offset: Shaft is offset from the pipe centerline → cam-like action further reduces friction
- Result: Near-zero wear, lower torque, longer life, and true zero-leakage performance
Technical Specifications – Vispar Double Offset Butterfly Valve
- Working pressure: 10 bar
- Sizes: 3″ and 4″
- Significantly lower operating torque
- Excellent chemical and corrosion resistance
- Full UV protection (Anti-UV)
- Suitable for aggressive media and outdoor installation
Concentric (Zero Offset) Industrial Butterfly Valve
The most widely used industrial butterfly valve type with the disc centered in the pipe bore. Perfect for water, wastewater, swimming pools, chemical lines, desalination, oil & gas, and petrochemical applications.
Technical Specifications – Vispar Zero Offset Industrial Butterfly Valve (PVC-U / PP / CPVC)
- Body & handle: High-strength engineering polymer
- Disc material (customer selectable): ABS, PP, CPVC, UPVC
- Seat/liner (selectable): EPDM or VITON (FKM)
- Nominal pressure: → 10 bar (63 – 125 mm) → 6 bar (160 – 200 mm) → 4 bar (250 mm)
- Very low pressure drop
- Full corrosion & chemical resistance
- UV-stabilized for permanent outdoor use
- All wear parts replaceable
- Direct mounting pad for actuator (optional) gear operator, pneumatic, electric, or hydraulic actuator
- Available handle colors: Blue (water) or Red (chemical/acid service)
Available sizes: 63 mm, 90 mm, 110 mm, 125 mm, 160 mm, 200 mm, 250 mm (2½” – 10″)
Applications of Vispar Industrial Butterfly Valves
- Oil & gas, petrochemical, and refining
- Chemical and acid lines
- Water and wastewater treatment plants
- Desalination and reverse osmosis plants
- Swimming pools and water parks
- Food & beverage (with suitable liner)
- Aggressive and corrosive fluids where metal valves fail quickly
Why Choose Vispar Industrial Butterfly Valves?
- Up to 5–10× longer service life than metal valves in corrosive environments
- Dramatically lower weight (easy handling and installation)
- Zero external corrosion – even in saline or acidic atmospheres
- Bubble-tight shut-off with resilient seat
- Significantly reduced torque → smaller, cheaper actuators
- Competitive pricing with premium quality
Pricing & Purchase
To receive the latest pricing, technical datasheets, or to place an order, please contact our sales experts directly via the “Contact Us” page.
