2” Double Flanged Butterfly Valve with 1.4462 Super Duplex Disc & Vulcanized EPDM Seat | Hand Lever Operated

Product Overview:

Tianjin Worlds Valve Co., Ltd. presents a 2-inch (DN50) double flanged butterfly valve engineered for reliable on/off control in corrosive service environments. This valve combines a ductile iron (GGG40) body with a 1.4462 super duplex stainless steel disc, a vulcanized EPDM seat, and a hand lever for manual operation. The double flanged design provides secure bolted connections on both sides, making it suitable for permanent pipeline installations, high-vibration lines, and end-of-pipe service.

Introduction:

Product Name: Flanged Butterfly Valve  

Body Material: Ductile Iron with Epoxy Coating

Disc Material: Super Duplex Stainless Steel Disc (1.4462)

Seat Material: EPDM, NBR, VITON, PTFE... 

Connection Type: Double Flanged connection

Size Range: DN50–DN1200  

Pressure Rating:  

PN10 / PN16 / PN25 / Class150 ... 

Top Flange: Available in ISO 5211 standard for direct actuator mounting  

Operating Temperature Range: -25°C to 120°C  (eg: EPDM) 

Operation: Manual Lever or Worm Gear (as specified)

Customization: All materials, dimensions, and pressure ratings can be modified according to customer requirements

Type: CBF02-TF01--Product Catalog

 Key Features & Advantages：

1. Vulcanized EPDM Seat – Permanent, Leak-Proof Bonding

• Chemically fused to the ductile iron body during high-temperature molding.

• Eliminates any leakage path between seat and body – no gaskets or O-rings required.

• Excellent extrusion resistance under pressure fluctuations.

• Note: Seat is non-replaceable; designed for long-term service



2. 1.4462 Super Duplex Disc – Maximum Corrosion & Strength

• 22% chromium, 5% nickel, 3% molybdenum – PREN > 35.

• Twice the yield strength of 316 stainless steel.

• Outstanding resistance to pitting, crevice corrosion, and chloride stress corrosion cracking – ideal for seawater, brine, and chemical environments.



3. Ductile Iron Body with Custom Epoxy Coating

• GGG40 offers >400 MPa tensile strength and ~15% elongation.

• Epoxy coating (250-300µm) protects against external corrosion.

• Any RAL color available – match your pipeline or corporate color scheme.



4. Double Flanged Connection – Secure & Rigid

• Flanged ends on both sides for bolted, leak-proof installation.

• Suitable for dead-end service and high-vibration pipelines.

• Flange drilling to EN 1092, ANSI B16.5, or customer specification.



5. Hand Lever Operation – Simple & Visual

• 90° quarter-turn; lever position clearly indicates open/closed.

• 10-position locking plate for basic throttling.

• Low operating torque; suitable for frequent manual cycling.



6. Full Customization – No Unnecessary Defaults

• Disc material: 1.4462 (standard), CF8M, duplex 2507, aluminum bronze.

• Seat: Vulcanized EPDM (standard); other vulcanized compounds on request.

• Body: DI (standard); WCB, CF8, CF8M available.

• Pressure: PN10, PN16, Class 150, or custom.

• Flange standard: EN, ANSI, AS2129, JIS.

Why Choose Tianjin Worlds Valve?

1. We manufacture strictly to customer specifications. The epoxy coating color – any RAL you need is just one example of our flexibility.

2. Our experience with 1.4462 super duplex and vulcanized seat technology ensures correct material application for severe corrosion environments.

3. Full documentation – material certificates (mill test reports), pressure test reports – provided with every order.

4. ISO 9001 certified facility with CE, UKCA, WRAS, and ACS certifications available upon request.

Conclusion

We invite you to contact us for a competitive quotation or to arrange a visit to our factory. Our technical team is ready to discuss your specific media, temperature, pressure, and even the exact RAL color you require. Tell us your project needs–we deliver exactly that.