CBF01-TF01
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Ductile Iron Valve Disc Vulcanized Rubber Seat Butterfly Valve | Corrosion-Resistant Flow Control
Tianjin Worlds Valve Co., Ltd. – ISO 9001 & WRAS-Certified Industrial Valve Solutions
CBF01-TF01---Operation and Maintenance ManualDOWNLOAD

1. Vulcanized Rubber-to-Disc Bonding
Permanent chemical fusion between EPDM/NBR elastomer and ductile iron disc prevents seat detachment during thermal cycling (-20°C to 120°C).
Eliminates compression-set failure common in press-fit seats, extending service life to 50,000+ cycles.
2. Optimal Flow Efficiency
Aerodynamic ductile iron disc design reduces pressure drop by 25% vs. traditional valves.
Full port opening minimizes turbulence in high-flow systems.
3. Triple-Layer Corrosion Defense
Body: 300µm fusion-bonded epoxy coating for chlorine/UV resistance.
Disc: Zinc-nickel plating + epoxy topcoat prevents pitting in pH 5-12 environments.
Stem: 316L SS with PTFE bushings.
4. Zero-Maintenance Design
Self-lubricating RPTFE bearings and triple-sealed stem eliminate greasing needs.

1. Expertise in OEM/ODM Services
As a trusted ISO 9001-certified manufacturer, we specialize in custom OEM/ODM designs, ensuring valves meet your exact specifications while adhering to global certifications.
2. High Performance
Vulcanized valve seat has very high corrosion resistance and is generally used to control some corrosive fluids with strong acidity and alkalinity.
3. Global Compliance
Pre-certified for EU, UK, and Asian markets.
4. Customization
Optional gearbox position indicators, locking devices, or extended stems.

Name | Material |
Body | Cast Iron Ductile Iron Carbon Steel Stainless Steel AL-Bronze |
Disc | Ductile Iron Carbon Steel Stainless Steel AL-Bronze |
Shaft | Stainless Steel Monel K500 |
Seat | BUNA NBR EPDM VITON PTFE TEFLON HEPDM Neoprene Hypalon Natural rubber |
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Water Treatment: NSF 61-certified EPDM seats for chlorine dosing systems.
HVAC: Low-torque operation in chilled water circuits (-20°C service).
Marine: Saltwater-resistant coating for ballast water control (DNV-GL option).
Fire Protection: FM-approved resilience in sprinkler supply lines.
Elevate your industrial systems with Tianjin Worlds Valve’s advanced Ductile Iron Valve Disc Vulcanized Rubber Seat Butterfly Valves. Source CE,UKCA,WRAS,ACS and ISO 9001 certified,Competitive pricing, fast delivery—request a quote today!
Ductile Iron Valve Disc Vulcanized Rubber Seat Butterfly Valve | Corrosion-Resistant Flow Control
Tianjin Worlds Valve Co., Ltd. – ISO 9001 & WRAS-Certified Industrial Valve Solutions
CBF01-TF01---Operation and Maintenance ManualDOWNLOAD

1. Vulcanized Rubber-to-Disc Bonding
Permanent chemical fusion between EPDM/NBR elastomer and ductile iron disc prevents seat detachment during thermal cycling (-20°C to 120°C).
Eliminates compression-set failure common in press-fit seats, extending service life to 50,000+ cycles.
2. Optimal Flow Efficiency
Aerodynamic ductile iron disc design reduces pressure drop by 25% vs. traditional valves.
Full port opening minimizes turbulence in high-flow systems.
3. Triple-Layer Corrosion Defense
Body: 300µm fusion-bonded epoxy coating for chlorine/UV resistance.
Disc: Zinc-nickel plating + epoxy topcoat prevents pitting in pH 5-12 environments.
Stem: 316L SS with PTFE bushings.
4. Zero-Maintenance Design
Self-lubricating RPTFE bearings and triple-sealed stem eliminate greasing needs.

1. Expertise in OEM/ODM Services
As a trusted ISO 9001-certified manufacturer, we specialize in custom OEM/ODM designs, ensuring valves meet your exact specifications while adhering to global certifications.
2. High Performance
Vulcanized valve seat has very high corrosion resistance and is generally used to control some corrosive fluids with strong acidity and alkalinity.
3. Global Compliance
Pre-certified for EU, UK, and Asian markets.
4. Customization
Optional gearbox position indicators, locking devices, or extended stems.

Name | Material |
Body | Cast Iron Ductile Iron Carbon Steel Stainless Steel AL-Bronze |
Disc | Ductile Iron Carbon Steel Stainless Steel AL-Bronze |
Shaft | Stainless Steel Monel K500 |
Seat | BUNA NBR EPDM VITON PTFE TEFLON HEPDM Neoprene Hypalon Natural rubber |
![]()
Water Treatment: NSF 61-certified EPDM seats for chlorine dosing systems.
HVAC: Low-torque operation in chilled water circuits (-20°C service).
Marine: Saltwater-resistant coating for ballast water control (DNV-GL option).
Fire Protection: FM-approved resilience in sprinkler supply lines.
Elevate your industrial systems with Tianjin Worlds Valve’s advanced Ductile Iron Valve Disc Vulcanized Rubber Seat Butterfly Valves. Source CE,UKCA,WRAS,ACS and ISO 9001 certified,Competitive pricing, fast delivery—request a quote today!
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