Ductile Iron Wafer Butterfly Valve with PTFE Seat & CF8M Disc

Product Overview

The valve body is cast from GGG40/500-7 ductile iron and coated with a durable epoxy finish for external corrosion protection. The PTFE (polytetrafluoroethylene) seat is fully resistant to almost all industrial chemicals, offering a self-lubricating, non-stick surface that reduces operating torque and prevents media adhesion. The CF8M (AISI 316) disc provides outstanding resistance to pitting and general corrosion, particularly in chloride-containing environments.

A worm gear operator delivers high mechanical advantage, making manual operation smooth and effortless even for larger valve sizes (typically from DN200 upward). The gearbox is self-locking, holding the disc securely at any position without creeping. A clear visual position indicator is provided on the gear housing.

The compact wafer design allows direct installation between standard pipeline flanges (EN 1092, ANSI B16.5, etc.) using through-bolts, saving space, weight, and installation cost. The top flange can be machined to ISO 5211 standards for future actuator mounting if required.

Available in sizes from DN50 to DN600 (2″ to 24″), with customizable pressure ratings (PN10, PN16, Class 150, etc.), this valve is a reliable choice for chemical processing, petrochemical, pharmaceutical, water treatment, and other corrosive service applications.

As a trusted China based OEM manufacturer, we produce this valve strictly to customer specifications body material, disc material, pressure rating, flange drilling, epoxy color, and actuation options are all customizable.

Introduce:

Wafer Butterfly Valve | Ductile Iron Body | PTFE Seat | CF8M Disc | Gear Operator

Tianjin Worlds Valve Co., Ltd. – Your Reliable Source for Durable, Cost-Effective Flow Control

CBF02-TA01 - Detailed Product Info

Key Features & Advantages:

1. PTFE Seat for Superior Chemical Resistance & Low Torque

• PTFE is inert to almost all acids, alkalis, solvents, and oxidizing agents.

• Self-lubricating surface reduces operating torque and prevents media buildup.

• Provides bubble‑tight shut‑off across a wide temperature range (-35℃ to +200℃).

 

2. CF8M Stainless Steel Disc for Corrosion Durability

• CF8M (AISI 316) offers excellent resistance to pitting, crevice corrosion, and general corrosion.

• Suitable for seawater, brine, acidic, and chloride-rich environments.

• Provides long service life with minimal maintenance.

 

3. Worm Gear Operator for Effortless & Safe Operation

• High gear ratio reduces manual effort, ideal for larger diameters or higher pressures.

• Self-locking mechanism holds the disc securely at any angle without drifting.

• Visual position indicator allows quick status verification.

 

4. Ductile Iron Body with Epoxy Coating

• GGG40 ductile iron provides high strength, impact resistance, and structural integrity.

• Epoxy coating (standard 250µm, any RAL color available) protects against external corrosion.

• Compact wafer design saves space and weight.

 

5. Customizable OEM Flexibility

• Size range DN50-DN600, pressure ratings PN10/PN16/Class 150.

• Body, disc, seat materials can be changed per customer request.

• ISO 5211 top flange available for actuator mounting.

• Flange standards: EN 1092, ANSI B16.5, AS2129, JIS, etc.

Standard:

Why Choose Tianjin Worlds Valve?

• We manufacture valves strictly according to customer specifications, while also providing professional recommendations on material selection and installation.

• Our experience with PTFE seated valves and CF8M discs ensures proper material application for corrosive and high purity services.

• Full documentation, including material certificates and test reports, is provided with every order.

• Our ISO 9001‑certified facility supports global export, with certifications such as CE, UKCA, WRAS, and ACS available upon request.

Conclusion:

We invite you to contact us for a competitive quotation or to arrange a visit to our factory. Our team is ready to discuss your project requirements, offer technical support, and demonstrate our manufacturing capabilities firsthand.