Electric Actuated Wafer Butterfly Valve | Two Stem Design | CF8M Disc & Replaceable EPDM Seat

Introduction:

Product Name: Wafer Butterfly Valve  

Body Material: Ductile Iron (DI)  

Disc Material: Stainless Steel (CF8M)

Seat Material: EPDM, NBR, VITON, PTFE...(Seat material options vary depending on the media or customer preference.) 

Connection Type: Wafer  

Size Range: DN50–DN300  

Pressure Rating:  

PN10 / PN16 / PN25... 

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

Operating Temperature Range: -20°C to 120°C (EPDM) 

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

Type: CBF03-TA03--Product Catalog

Product Overview

Tianjin Worlds Valve Co., Ltd. offers a 4‑inch (DN100) electric actuated wafer butterfly valve featuring a two-piece shaft design, a CF8M (AISI 316) stainless steel disc, and a replaceable EPDM seat. This valve is engineered for reliable automated on/off and modulating control in water treatment, HVAC, chemical processing, and general industrial applications.

Key Features & Advantages：

1. Two-Stem Design – Enhanced Structural Integrity

• The upper and lower shaft configuration provides exceptional torsional strength, resisting bending and deformation under high pipeline stress or pressure surges.

• Ensures precise, stable disc alignment throughout its entire 90-degree rotation, resulting in smooth, low-friction operation and reduced actuator strain.

• Minimizes mechanical stress and wear on stem and bearing points, significantly prolonging valve service life and reducing long-term maintenance needs.

 

2. CF8M Stainless Steel Disc – Superior Corrosion Resistance

• CF8M (AISI 316) offers excellent resistance to pitting, chlorides, and general corrosion in water, seawater, and mild chemical environments.

• Outperforms standard 304 grades, making it ideal for harsh or marine applications.

• Precision-machined disc interacts perfectly with the seat to create a reliable, bubble-tight seal.

 

3. Replaceable EPDM Seat – Easy Maintenance & Low Lifecycle Cost

• The EPDM seat can be replaced in the field without removing the valve from the pipeline, significantly reducing downtime.

• Eliminates the need to replace the entire valve when the seat wears — only the seat needs replacement.

• EPDM provides bubble‑tight shut‑off (Class VI), excellent resistance to water, steam, ozone, and aging.

• Temperature range: -20°C to +120°C.

• Alternative seat materials (NBR, Viton, PTFE) available for specialized media.

 

4. Electric Actuator – Remote & Precise Automated Control

• Enables on/off or modulating control from a control room, reducing manual labor and improving response time.

• ISO 5211 top flange allows direct actuator mounting without custom brackets.

• Integrates with PLC, DCS, or SCADA systems via 4-20mA signals, feedback relays, and communication protocols.

• Manual handwheel override for operation during power outages or maintenance.

 

5. Wafer-Style Body – Compact & Cost-Effective

• Installs directly between standard pipeline flanges using through-bolts, saving space, weight, and installation time.

• No companion flanges required – lightweight and compact footprint.

• Face-to-face dimensions conform to ISO 5752 / EN 558 Series 20.

 

6. OEM/ODM Flexibility – Made to Your Specifications

• Seat materials: EPDM (standard, replaceable), NBR, Viton (FKM), PTFE.

• Body materials: Ductile iron (standard), WCB, CF8, CF8M.

• Disc materials: CF8M (standard), CF8, duplex, super duplex, aluminum bronze.

• Actuator voltage: 110VAC, 220VAC, 380VAC, 24V DC (customer‑selectable).

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

• Certifications: ISO 9001, CE, UKCA, WRAS, ACS available upon request.

 

Why Choose Tianjin Worlds Valve?

1. Direct OEM/ODM Manufacturer – We produce in our own ISO 9001 certified factory, not a trading company.

2. Replaceable Seat Advantage – Field-serviceable EPDM seat reduces downtime and maintenance costs.

3. Split‑Stem Design Expertise – Dual-shaft configuration provides superior strength, precise disc alignment, and extended service life.

4. Electric Actuation – Ready for Automation – ISO 5211 top flange enables direct actuator mounting with SCADA integration.

5. Certified Quality – ISO 9001 certified with CE, UKCA, WRAS, and ACS certifications available upon request.

6. Full Documentation – Material certificates (mill test reports) and pressure test reports provided with every order.

We invite you to contact us for a competitive quotation or to arrange a visit to our factory. Our engineering team is ready to discuss your specific actuator voltage, control type, media, and material requirements.