Gear Operated Wafer Butterfly Valve – Replaceable EPDM Seat, PN10

Product Overview

A gear operated wafer butterfly valve uses a worm gear operator for smooth, self-locking manual control. The wafer body fits between two flanges, keeping it compact and lightweight. What really sets this model apart is its replaceable EPDM seat—unlike bonded seats, it can be swapped in the field without replacing the whole valve, extending service life and cutting maintenance costs.

This 4-inch model combines a ductile iron body, CF8 stainless steel disc, replaceable EPDM seat, and worm gear operator, rated PN10. It's built for water supply, wastewater, HVAC, and general industrial service. As a direct OEM/ODM manufacturer with over 19 years of export experience, Tianjin Worlds Valve Co., Ltd. customizes materials, sizes, pressure ratings, flange standards, coatings, and actuators to your specs. We're ISO 9001 (LRQA), CE, UKCA, WRAS, and ACS certified, exporting to 50+ countries.

Introduce:

Gear Operated Wafer Butterfly Valve |Replaceable EPDM Seat | DI Body | CF8 Disc | OEM Manufacturer

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

CBF02-TA03 - Detailed Product Info

Technical Specifications

This model is configured with the following parameters. Please note that every item listed below is customizable to your specific needs.

 

Key Features & Advantages

1. Replaceable EPDM Seat–Easy Maintenance, Lower Cost

• Field-Replaceable Design–The EPDM seat is mechanically retained, not bonded to the body. When worn, simply open the valve, remove the old seat, insert the new one, and reassemble–no need to replace the entire valve or send it back to the factory.

• Extended Valve Life–The body, disc, and stem remain in service while only the seat is replaced. This significantly extends the valve's overall service life and reduces total cost of ownership.

• Simplified Spare Parts–One seat fits all valves of the same size and model. Stocking a few spare seats covers multiple valves–no need to inventory complete valve assemblies.

 

2. Gear Operator–Smooth, Self-Locking Control

• Self-Locking Design–The worm gear is self-locking, so the disc stays in position even under flow pressure–no additional locking devices required.

• Open-Close Position Indicator–Built-in indicator shows valve position at a glance.

• Reduced Operating Torque–The gear ratio multiplies manual input torque, making operation smooth and effortless–particularly important for larger sizes where hand lever torque is too high for comfortable operation.

• ISO 5211 Mounting–Standardized top flange allows easy upgrade to electric or pneumatic actuation if needed.

 

3. Wafer Type Design–Compact & Economical

• Space-Saving–The wafer body is sandwiched between two pipe flanges, requiring minimal face-to-face space and reducing overall pipeline length.

• Lightweight–Up to 40% lighter than flanged or lug designs, simplifying handling and reducing structural load on piping systems.

• Cost-Effective–With less material and simpler machining, wafer valves offer excellent value for general-purpose industrial applications.

 

4. Body Material–Ductile Iron (GGG40 / 500-7)

• High Strength–Offers tensile strength of ≥400 MPa, providing reliable performance under PN10 pressure surges.

• Impact Resistance–The nodular graphite structure delivers exceptional toughness, withstanding mechanical shock and pipeline vibration.

• Corrosion Protection–Combined with standard epoxy coating (250μm minimum), the body resists corrosion in water, wastewater, and general industrial service.

 

5. Disc Material–CF8 Stainless Steel (AISI 304)

• Good Corrosion Resistance–CF8 provides reliable resistance to oxidation and corrosion in water, mild chemicals, and atmospheric exposure.

• Non-Toxic and Safe–Suitable for potable water and general service applications.

• Durable and Lightweight–Offers good mechanical strength while keeping the disc weight manageable for smooth operation.

 

6. EPDM Seat–Reliable Water-Tight Sealing

• Excellent Water Resistance–EPDM offers outstanding resistance to water, steam, and outdoor weathering, making it ideal for water supply, wastewater, and HVAC applications.

• Wide Temperature Range–Maintains sealing properties from -20℃ to +120℃, covering the full range of typical water system operating temperatures.

• Bubble-Tight Shut-Off–Provides reliable bi-directional sealing, ensuring zero leakage in both flow directions.

 

Typical Applications

Gear operated wafer butterfly valves with replaceable EPDM seat are trusted across a wide range of industries:

 

 

Why Choose Tianjin Worlds Valve?

• Quality you can trust. Our ISO 9001:2015 certification is issued by LRQA, one of the world's most respected certification bodies. Every valve comes with material certificates and pressure test reports–no exceptions.

• Replaceable Seat Specialists. Our field-serviceable seat design means you can swap EPDM seats without removing the valve from the line–reducing downtime and maintenance costs.

• Gear Operated Valve Expertise. We have extensive experience manufacturing gear operated butterfly valves for water, HVAC, and industrial projects worldwide.

• Full Customization. Materials, sizes, pressure ratings, flange standards (ANSI, DIN, JIS, BS), coatings (any RAL color), actuators–all to your specification.

• 19+ Years Export Experience. Smooth logistics and after-sales support to 50+ countries across Europe, Americas, Middle East, and Southeast Asia.

• 100% Traceability. Material certificates and pressure test reports with every order–no exceptions.

• Quick Turnaround. Dedicated project manager; typical lead time 20–30 days. Factory visits welcome in Tianjin.

 

Get in Touch – Customize Your Wafer Butterfly Valve Today:

Whether you need this 4-inch PN10 configuration with replaceable EPDM seat, a different size, or a fully custom design–we're ready to build to your specification.

Send us your requirements:

• Required size and pressure rating

• Media type and operating temperature

• Preferred material combination (body / disc / seat)

• Actuator type (manual, gear, electric, pneumatic, hydraulic)

• Flange standard and drilling (ANSI, DIN, JIS, BS)

• Coating color (any RAL)

• Target quantity and destination port

 

Our team will respond within 24 hours with a quotation and engineering proposal.

Factory visits welcome–come see how we manufacture your valves in Tianjin, China.

Contact Us Now and Let's Build Your Valve Together.