Grooved End Butterfly Valve – Installs in Minutes, No Welding Required

Product Overview

This DN80 model features a ductile iron body, a ductile iron disc with EPDM over-molding, an SS420 stainless steel stem, and an EPDM seat–a material combination that delivers excellent corrosion resistance, bubble-tight sealing, and long service life. Rated at PN16 (16 bar) , it's built for demanding service conditions.

As a direct OEM/ODM manufacturer with over 15 years of export experience, we offer fully customizable solutions–materials, sizes, pressure ratings, coatings, actuators, and packaging–all tailored to your exact specifications. Our products are exported to more than 50 countries and backed by ISO 9001, CE, UKCA, WRAS, and ACS certifications..

Introduce:

Grooved End Butterfly Valve | DI Body | DI Disc Coated EPDM Seat | SS420 Stem | 16 Bar

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

CBF02-TG01 - Detailed Product Info

Technical Specifications

Key Features & Advantages

1. Grooved End Connection–Install in Minutes

The grooved end design offers significant advantages over traditional flanged or threaded connections:

• No Welding, No Threading–The valve connects to the pipeline using two mechanical grooved couplings. Just insert the valve between couplings and tighten. No hot work permits, no threading machines, no flange gaskets. Installation is simple, fast, and safe.

• 60% Faster Installation–Compared to flanged valves, grooved end valves install in a fraction of the time. For large-scale projects, this translates to significant labor savings and faster project completion.

• Easy Maintenance–The valve can be removed and reinstalled using the same grooved couplings, simplifying maintenance and replacement without disturbing the rest of the piping system.

• Compact & Space-Saving–Grooved end butterfly valves are more compact than flanged alternatives, fitting easily into tight equipment rooms and crowded pipe racks.

2. Body Material–Ductile Iron (GGG40)

The valve body is manufactured from ductile iron GGG40 (ASTM A536 65-45-12):

• Twice the Strength of Gray Iron–Ductile iron offers approximately twice the tensile strength, making it ideal for PN16 service and pressure surge conditions.

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

• Corrosion Resistant–Combined with our standard epoxy coating (250μm minimum), the ductile iron body provides reliable corrosion protection for water, wastewater, and general industrial service.

3. Disc Material–Ductile Iron with EPDM Over-molding

The disc features a ductile iron core with EPDM rubber over-molding:

• Bubble-Tight Sealing–The EPDM over-molding creates a resilient sealing surface against the seat, delivering bubble-tight shut-off certified to EN 12266-1 and API 598.

• Maximum Flow Capacity–The over-molded design eliminates the need for a separate liner, allowing a larger flow passage and higher Cv values.

• Full Corrosion Protection–The EPDM layer fully encapsulates the ductile iron disc, protecting it from corrosion and extending service life.

4. Seat Material–EPDM

The EPDM seat provides reliable sealing across a wide range of water-based applications:

• Excellent Water & Weather Resistance–EPDM offers outstanding resistance to water, steam, and outdoor weathering.

• Wide Temperature Range–Maintains sealing properties from -20℃ to +120℃.

• Chemical Resistance–Resists dilute acids, alkalis, and water treatment chemicals including chlorine and ozone.

5. Stem Material–SS420

The valve stem is manufactured from SS420 stainless steel:

• High Strength–Significantly higher 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. Actuator Options & ISO 5211 Mounting

The valve is equipped with a standard ISO 5211 top flange:

• Hand Lever–Quick manual on-off control with locking plate.

• Gear Operator–Self-locking with open-close indicator.

• Electric Actuators–On-off or modulating types with 4-20 mA feedback, manual override, and PLC/SCADA integration.

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

• Chainwheel Operators–For overhead or inaccessible installations.

Custom actuator interfaces are available upon request.

Typical Applications

Why Choose Tianjin Worlds Valve?

1. Direct Factory, No middleman–factory pricing and direct communication.

2. 19+ Years of Export Experience–Smooth logistics and after-sales support to 50+ countries.

3. Full OEM/ODM Customization–Materials, sizes, pressure ratings, coatings, actuators, packaging–all tailored to your spec.

4. International Certifications–ISO 9001, CE, UKCA, WRAS, ACS – DNV/ABS available.

5. Complete Documentation–Material certificates, pressure test reports with every order.

6. 100% Pressure Testing–Every valve tested before shipment.

7. Quick Response & On-Time Delivery–Dedicated project manager; lead time 15–40 days.

8. Factory Visits Welcome–Tour our production lines in Tianjin.

Get in Touch–Customize Your Grooved Valve Today:

Whether you need this DN80 PN16 configuration or a fully custom design with specialized materials, actuators, or coatings, we're ready to build to your specification.

Send us your enquiry with:

• Required size and pressure rating

• Media type and operating temperature

• Preferred material combination

• Actuator type and control requirements

• Target quantity and destination port

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

We warmly invite you to visit our factory in Tianjin, China. Let's build your valve together.