Lug Butterfly Valve – CF8M Disc, EPDM Seat, Class 150, OEM Manufacturer

Introduce:

Lug Butterfly Valve | Ductile Iron Body | CF8M Disc | EPDM Seat | Class 150

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

CBF02-TL01 - 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. Lug Type Design–Dead-End Service & Maintenance Isolation

• Independent Pipeline Mounting–Threaded lugs on both sides of the valve body allow each side to be bolted independently to pipe flanges. This enables dead-end service–the valve can be installed at the end of a pipeline or used to isolate a section for maintenance.

• Simplified Maintenance–The valve can be removed from one side without depressurizing or shutting down the entire pipeline. In chemical plants and processing facilities where downtime is measured in thousands of dollars per hour, this is a game-changer.

• Superior Rigidity–The lug design provides greater structural strength than wafer types, withstanding pipe stress, vibration, and thermal expansion.

2. Hard Back Rubber Seat Design–Built for Durability, Not Replacement

Unlike soft-seated valves that rely on replaceable rubber or PTFE seats, the hard seat design is permanently integrated into the valve body:

• Superior Wear Resistance–The metal-to-metal sealing interface withstands abrasive media, particulate-laden fluids, and high-velocity flow that would quickly erode a soft seat.

• Higher Temperature Capability–Hard seats maintain sealing integrity at temperatures that would cause EPDM, NBR, or PTFE seats to degrade or lose elasticity. This makes them suitable for steam, hot oil, and high-temperature process fluids.

• No Seat Replacement Needed–While the seat cannot be replaced in the field, it also doesn't need to be. Hard seats are engineered for the full service life of the valve, reducing maintenance frequency and eliminating spare seat inventory costs.

• Consistent Sealing Over Time–The metal-to-metal sealing geometry maintains its integrity through thousands of cycles, with minimal compression set or relaxation.

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

• High Strength–Offers tensile strength of ≥400 MPa and yield strength of ≥250 MPa, providing reliable performance under pressure surges.

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

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

4. Disc Material–CF8M Stainless Steel (AISI 316)

• Superior Corrosion Resistance–CF8M offers excellent resistance to pitting and crevice corrosion, particularly in chloride environments, seawater, and aggressive media.

• Wide Chemical Compatibility– Suitable for water, wastewater, mild chemicals, acids, and alkalis.

• Long Service Life–The corrosion-resistant properties of CF8M ensure extended service life even in aggressive environments.

5. Stem Material–SS420 Stainless Steel

• High Strength–Significantly higher tensile strength than 304/316 stainless steel, ensuring reliable torque transmission.

• Wear Resistant–Hardened surface resists galling and fretting during repeated cycling.

• Blow-Out Proof Design–Retention mechanism prevents accidental stem ejection under pressure surges.

6. ISO 5211 Top Flange–Ready for Automation

All our lug butterfly valves feature a standard ISO 5211 top flange, providing universal interchangeability for various actuation methods:

• Hand Lever–Quick manual on-off control with locking plate (smaller sizes)

• Gear Operator–Self-locking with open-close indicator (larger sizes)

• Electric Actuators–On-off or modulating types with 4-20 mA feedback

• Pneumatic Actuators–Double-acting or spring-return (fail-safe) designs

• Hydraulic Actuators–High-torque, subsea, or explosive environments

Typical Applications

• Chemical Processing–Corrosive fluids, acids, alkalis, solvents.

• Oil & Gas–Refining, petrochemical processing, pipeline systems.

• Power Generation–Cooling water, steam lines, condenser systems .

• Pulp & Paper–Bleaching chemicals, corrosive liquors .

• Mining & Metallurgy–Abrasive slurries, leaching solutions.

• Water Treatment–Chemical dosing, chlorine, ozone systems.

• HVAC Systems–Chilled water, hot water, cooling tower systems.

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.

• Experience that delivers – 19+ years in the valve business. Thousands of lug butterfly valves shipped to 50+ countries. We know what works, what doesn't, and how to get your order right the first time.

• Flexibility that fits your project – Any size. Any pressure. Any flange standard (ANSI, DIN, JIS, BS). Any actuator. Any coating. We build to your spec, not our catalogue.

• Service you can count on – Dedicated project manager from order to delivery. Typical lead time 15–40 days. Factory visits welcome in Tianjin.

Get in Touch–Customize Your Lug Valve Today:

Whether you need this Class 150 configuration, a different size, automated actuation, or a complete valve package for a large-scale project – 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)

• Target quantity and destination port

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

We also welcome factory visits–come see how we manufacture your valves in Tianjin, China.

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