Wafer Concentric Butterfly Valve–DI Body, CF8 Disc, EPDM Seat

Introduction:

Product Name: Wafer Butterfly Valve  

Body Material: Ductile Iron (DI)  

Disc Material: Stainless Steel (304)

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

Connection Type: Installed between flanges

Size Range: DN50–DN3000  

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: CBF02-TA04--Product Catalog

 

Key Features & Advantages：

1. Bubble-Tight Shut-Off

• Concentric design with resilient EPDM seat ensures 100% bi-directional sealing performance

• Zero-leakage sealing even under low-pressure conditions, eliminating fluid loss and system inefficiency

• Excellent resilience of EPDM material allows the seat to recover from minor deformations, maintaining sealing integrity over thousands of cycles

• Complies with industry leakage standards including ISO 5208 Rate A and API 598, giving you confidence in system integrity

 

2. Compact & Lightweight

• Wafer-style body fits snugly between standard pipe flanges, requiring significantly less installation space than lug or flanged designs

• Reduced weight simplifies handling, storage, and transportation, lowering overall logistics costs

• Easier installation with fewer bolts and less labour compared to heavier valve types

• Ideal for space-constrained installations where traditional gate or globe valves cannot be accommodated

 

3. Low Pressure Drop

• Streamlined flow path with minimal obstruction allows fluid to pass through with little resistance

• Designed to reduce energy consumption by minimising pumping power requirements across the system

• Disc profile optimised for flow efficiency–when fully open, the disc presents the only resistance to flow

• Helps lower operating costs over the valve's service life, especially in continuous-flow applications

 

4. Quarter-Turn Operation

• 90-degree rotation from fully open to fully closed enables rapid shut-off or flow initiation in seconds

• Simple, intuitive operation – no specialised training required for manual or actuated control

• Compatible with a wide range of actuators – manual handle, worm gear, electric, or pneumatic, allowing seamless integration into automated systems

• Reduces operator fatigue compared to multi-turn valves like gate or globe valves

 

5. Corrosion-Resistant

• CF8 stainless steel disc provides excellent resistance to corrosion in water, air, and mild chemical environments

• Long-term protection against rust and pitting, ensuring consistent performance even in humid or wet conditions

• Extends valve service life–reducing the need for frequent replacement and minimising lifecycle costs

• Suitable for a wide range of fluids, including fresh water, seawater, and many neutral industrial fluids

 

6. Durable Construction

• Ductile iron body offers superior strength and impact resistance compared to standard cast iron, withstanding mechanical stress and pressure surges

• SS420 stainless steel stem delivers high tensile strength and excellent wear resistance, ensuring smooth operation over thousands of cycles

• Built to withstand demanding conditions–suitable for operating pressures up to Class 150 and temperatures from -20°C to +120°C (EPDM seat)

• Rigorous testing–every valve undergoes pressure testing before leaving the factory to verify structural integrity and sealing performance

 

7. Cost-Effective

• Simple design with fewer components reduces manufacturing costs–savings passed on to you

• Low maintenance requirements–EPDM seat and stainless steel disc resist wear and corrosion, extending service intervals

• Minimal downtime–when maintenance is needed, the straightforward design allows for quick inspection and servicing

• Competitive initial cost combined with long service life delivers exceptional value for money over the full lifecycle

• Reduced installation and labour costs–lightweight and compact design means faster installation with smaller crews 

Applications

This wafer butterfly valve is widely used across multiple industries:

• Municipal Water Supply & Distribution–Ideal for drinking water transmission and distribution networks, with EPDM seat and CF8 disc materials that comply with international drinking water safety standards for contamination-free delivery.

• Wastewater Treatment Plants–Handles influent, effluent, and sludge lines with reliable sealing and corrosion resistance, ensuring consistent performance in the presence of mild chemicals and abrasive particles commonly found in wastewater.

• HVAC Systems–Suited for chilled water, hot water heating circuits, and cooling tower applications, with compact dimensions that fit easily into mechanical rooms and temperature resistance up to 120°C for closed-loop building systems.

• Industrial Processing–Suitable for general fluid handling across manufacturing sectors including food and beverage, textile, and pharmaceutical utilities, where the stainless steel disc and EPDM seat provide compatibility with a wide range of process fluids.

• Irrigation Systems–Reliable on/off control for agricultural sprinkler and drip irrigation networks, with weather-resistant materials that withstand prolonged outdoor exposure and varying water quality.

• Fire Protection Systems–Provides dependable isolation and zone control in fire mains and sprinkler supply lines, with zero-leakage sealing that ensures system integrity is maintained during both standby and emergency conditions.

• Power Generation–Handles cooling water intake, condenser circuits, and auxiliary system isolation, with low pressure drop that minimises pumping losses and corrosion-resistant materials suitable for seawater or freshwater cooling.

• Chemical & Petrochemical (Mild Duty)–Suitable for process water, cooling water return, and waste neutralisation lines, where EPDM resists mild acids and alkalis, while the stainless steel disc provides long-term corrosion protection. For highly corrosive media, please consult our engineering team for material upgrade options.

Why Choose Tianjin Worlds Valve?

At Tianjin Worlds Valve Co., Ltd. , we are more than just a supplier – we are your long-term manufacturing partner. We operate as a direct ISO 9001-certified factory, audited by LRQA, one of the world's most respected certification bodies. This means when you work with us, you are dealing directly with the people who control the entire production process – from raw material sourcing to final quality inspection.

What Sets Us Apart

1. Decades of Focused Expertise

With over 19 years of dedicated experience in butterfly valve manufacturing, we have refined our engineering capabilities, production processes, and quality control systems to deliver consistent, reliable products. Our long-standing presence in the industry means we understand the technical challenges you face and know how to solve them.

2. Globally Recognised Certifications

We hold a comprehensive portfolio of international certifications that demonstrate our commitment to quality and safety:

ISO 9001:2015 – Quality management systems (LRQA audited)

PED 2014/68/EU (CE) – EU pressure equipment safety

UK PE(S)R 2016 (UKCA) – UK pressure equipment safety

WRAS – UK drinking water safety (butterfly and gate valves)

ACS – French health safety compliance (butterfly valves)

These certifications give you the confidence that our products meet the strictest regulatory requirements in Europe, the UK, and beyond.

3. True OEM/ODM Capability

We are not a trading company that simply sells standard products from a catalogue. We are a true OEM/ODM manufacturer. Whether you need valves built to your engineering drawings, branded with your logo, or customised with specific materials, coatings, or flange standards, we deliver exactly what you specify. Your design becomes our production standard.

4. Global Reach with Local Support

We export to more than 50 countries across Europe, the Middle East, Southeast Asia, Africa, and the Americas. Our long-standing relationships with SGS and Bureau Veritas – spanning over 15 years as an audited supplier – provide independent validation of our reliability and production integrity.

5. Complete Documentation and Traceability

Every order comes with full documentation: material certificates, pressure test reports, inspection records, and export documentation. We believe in complete transparency so you always know exactly what you are receiving.

6. Commitment to Quality and Customer Satisfaction

At Tianjin Worlds Valve, we do not just build valves – we build trust. Our focus on quality craftsmanship, rigorous testing (including 110% rated pressure testing), responsive service, and after-sales support ensures that your project runs smoothly from order placement to installation and beyond.

7. Beyond Butterfly Valves

While butterfly valves remain our core specialisation, we also manufacture gate valves, check valves, strainers, and other complementary products. This gives you the convenience of working with a single, reliable source for multiple valve needs.

When you choose Tianjin Worlds Valve, you are choosing a partner who values quality as much as you do. We are committed to delivering reliable, custom-engineered valve solutions that meet your exact requirements – delivered on time, with full transparency and accountability.

Partner with us for your next project. We are ready to earn your trust.