Views: 0 Author: Site Editor Publish Time: 05-13-2026 Origin: Site
Tianjin Worlds Valve Co., Ltd. offers a wafer butterfly valve combining a ductile iron body, a CF8 stainless steel disc, and a replaceable soft EPDM seat. Designed for reliable on/off control and basic throttling, this valve is suitable for water, wastewater, HVAC, and general industrial applications. Available in sizes from 2 inches (DN50) up to 120 inches (DN3000) , it covers one of the broadest size ranges in the industry, from small branch lines to large-diameter water transmission mains.
Product Name: Wafer Butterfly Valve
Body Material: GGG50 Ductile Iron with Epoxy Coating
Disc Material: Stainless Steel, Ductile Iron, Duplex 2505, Supper Duplex 2507, Aluminum Bronzed...
Seat Material: EPDM, NBR, VITON, PTFE...
Connection Type: Wafer type connection
Size Range: DN50–DN3000
Pressure Rating:
PN6/ PN10 / PN16 / 150LB/ 5K/ 10K / “D” / “E”...
Top Flange: Available in ISO 5211 standard for direct actuator mounting
Face to Face : DIN558-1 / DIN3202 / ISO5752 / BS5155...
Operating Temperature Range: -20℃to 120℃ (eg: EPDM)
Operation: Manual Lever, Worm Gear, Electric Actuator, Pneumatic Operated... (as specified)
Customization: All materials, dimensions, and pressure ratings can be modified according to customer requirements
Type: CBF02-TA03--Product Catalog
1. Replaceable Soft EPDM Seat – Easy Maintenance & Reliable Sealing
The EPDM seat is a resilient soft rubber that provides excellent sealing performance.
Field Replaceable: The seat can be changed without disassembling the entire valve or removing it from the pipeline, reducing downtime.
Bubble-Tight Shut-Off: EPDM conforms tightly to the disc, delivering zero leakage in water and mild chemical services.
Wide Temperature & Media Compatibility: EPDM operates from -20°C to +120°C and resists water, steam, ozone, and many mild chemicals.
2. Broadest Size Range – 2″ to 120″ (DN50 – DN3000)
One valve family covers almost every pipeline diameter requirement.
Small to Giant: From 2 inches (DN50) for branch lines to 120 inches (DN3000) for major water transmission mains.
Standardized Dimensions: Face-to-face per ISO 5752 / EN 558 Series 20 ensures interchangeability across sizes.
Scalable Design: The same high-quality materials and replaceable seat concept apply to all sizes.
3. Ductile Iron Body with Epoxy Coating – Strong & Corrosion Resistant
The body is built for long service life in demanding environments.
High Strength & Impact Resistance: GGG40 offers >400 MPa tensile strength and excellent elongation (~15%).
External Epoxy Coating: Minimum 250 µm thickness (any RAL color available) protects against atmospheric and soil corrosion.
Compact Wafer Design: Lightweight, space-saving, and easy to install.
4. CF8 Stainless Steel Disc – Durable & Cost-Effective
The standard disc material balances performance and economy.
CF8 (AISI 304): Good corrosion resistance in water, mild chemicals, and food processing environments.
Mechanical Reliability: Tensile strength 485 MPa ensures long‑term operation.
Upgrade Options: For seawater or aggressive media, CF8M (316), duplex, super duplex, or aluminum bronze discs are available.
5. Fully Customizable – Any Component Can Be Tailored
We manufacture strictly to customer specifications.
Disc Material: CF8, CF8M, duplex 2205, super duplex 2507, aluminum bronze, or coated ductile iron.
Seat Material: EPDM (standard), NBR, Viton, PTFE, or other elastomers.
Body Material: Ductile iron, WCB carbon steel, CF8, CF8M.
Pressure Rating: PN10, PN16, PN25, Class 150, Class 300, or custom.
Flange Standard: EN 1092, ANSI B16.5, AS2129, JIS, etc.
Operation: Manual lever, worm gear, electric actuator, or pneumatic actuator (with ISO 5211 top flange available).
1. We manufacture strictly to customer specifications – no default assumptions. If you need a special disc material or seat compound, we produce it.
2. Our replaceable soft seat design significantly reduces maintenance costs, especially on large-diameter valves (up to 120″).
3. Full documentation – material certificates, pressure test reports – provided with every order.
4. SO 9001-certified facility with CE, UKCA, WRAS, and ACS certifications available.
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 – no matter whether you need a 2″ valve or a 120″ valve, with EPDM, NBR, or any custom seat material.
