CBF03-TA71
OEM|ODM
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Industrial Butterfly Valves | China OEM Valve Supplier
Tianjin Worlds Valve Co., Ltd. – ISO 9001, CE, UKCA & WRAS Certified Manufacturer
CBF03-TA71-Operation and Maintenance Manual DOWNLOAD

1. Ductile Iron Body Construction
Superior Strength: EN-GJS-500-7 ductile iron provides excellent impact resistance and longevity
Corrosion Protection: 250μm epoxy coating standard (300-400μm optional) for harsh environments
Cost-Effective: Delivers cast steel performance at a competitive price point
2. CF8M Stainless Steel Disc
Corrosion Resistance: 316 stainless steel composition withstands corrosive media and atmospheric exposure
Mechanical Durability: Maintains structural integrity under pressure and temperature variations
Precision Engineering: Optimized disc profile ensures smooth operation and perfect seating
3. EPDM Seat Sealing Performance
Bubble-Tight Shutoff: Achieves zero leakage per EN 12266-1 Class A standards
Temperature Flexibility: Suitable for applications from -20°C to 120°C
Media Compatibility: Excellent for water, mild chemicals, and industrial fluids
4. Hand Lever Operation
Quick 90°Operation: Enables rapid open/close control with visual position indication
Low Operating Torque: Optimized design reduces required effort by 30%
Position Locking: Integrated locking holes secure valve in fully open or closed positions
5. Wafer Type Design
Space Saving: Compact construction reduces installation space requirements by 40%
Easy Installation: Simple insertion between ANSI/DIN flanges without additional hardware
Weight Reduction: 35% lighter than lug-type valves of similar size

Parameter | Specification |
Model | CBF03-TA71 |
Sizes | DN50-DN300 |
Pressure Class | PN6/10/16/150LB/JIS10K/AS “D”/ “E” |
Design | EN593 BS5155 EN1092 ISO5211 |
Testing | ISO5208 EN12266-1 |
TOP Flange | ISO5211 (according to customer’s needs) |
Face to Face | EN558-1 DIN3202 ISO5752 BS5155 |
Standard | ASME B16.34 |
Body | Ductile Iron |
Disc | CF8M |
Seat | EPDM |
Stem | SS431 |

Customization Support: Modified dimensions, coatings, branding, and packaging options
Quality Assurance: ISO 9001 certified manufacturing with complete material traceability
Competitive Pricing: Direct factory pricing with no intermediary margins
Global Compliance: CE, UKCA, and WRAS certifications for international market access
Technical Expertise: Engineering support for product selection and application guidance
Reliable Supply: Efficient production planning and logistics for on-time delivery

Water Treatment Systems: Distribution networks, filtration units, and pumping stations
HVAC Services: Chilled water circuits, cooling towers, and air handling systems
Industrial Processing: Cooling water lines, process fluid control, and utility services
Fire Protection: Sprinkler systems and hydrant supply lines
Building Services: Plumbing systems and mechanical equipment rooms
General Industry: Various fluid handling applications requiring reliable manual control
As an experienced China OEM valve supplier, we provide high-quality industrial butterfly valves featuring ductile iron bodies, CF8M stainless steel discs, EPDM seats, and hand lever operation for water treatment, HVAC, industrial processing, and general fluid control applications worldwide.
Industrial Butterfly Valves | China OEM Valve Supplier
Tianjin Worlds Valve Co., Ltd. – ISO 9001, CE, UKCA & WRAS Certified Manufacturer
CBF03-TA71-Operation and Maintenance Manual DOWNLOAD

1. Ductile Iron Body Construction
Superior Strength: EN-GJS-500-7 ductile iron provides excellent impact resistance and longevity
Corrosion Protection: 250μm epoxy coating standard (300-400μm optional) for harsh environments
Cost-Effective: Delivers cast steel performance at a competitive price point
2. CF8M Stainless Steel Disc
Corrosion Resistance: 316 stainless steel composition withstands corrosive media and atmospheric exposure
Mechanical Durability: Maintains structural integrity under pressure and temperature variations
Precision Engineering: Optimized disc profile ensures smooth operation and perfect seating
3. EPDM Seat Sealing Performance
Bubble-Tight Shutoff: Achieves zero leakage per EN 12266-1 Class A standards
Temperature Flexibility: Suitable for applications from -20°C to 120°C
Media Compatibility: Excellent for water, mild chemicals, and industrial fluids
4. Hand Lever Operation
Quick 90°Operation: Enables rapid open/close control with visual position indication
Low Operating Torque: Optimized design reduces required effort by 30%
Position Locking: Integrated locking holes secure valve in fully open or closed positions
5. Wafer Type Design
Space Saving: Compact construction reduces installation space requirements by 40%
Easy Installation: Simple insertion between ANSI/DIN flanges without additional hardware
Weight Reduction: 35% lighter than lug-type valves of similar size

Parameter | Specification |
Model | CBF03-TA71 |
Sizes | DN50-DN300 |
Pressure Class | PN6/10/16/150LB/JIS10K/AS “D”/ “E” |
Design | EN593 BS5155 EN1092 ISO5211 |
Testing | ISO5208 EN12266-1 |
TOP Flange | ISO5211 (according to customer’s needs) |
Face to Face | EN558-1 DIN3202 ISO5752 BS5155 |
Standard | ASME B16.34 |
Body | Ductile Iron |
Disc | CF8M |
Seat | EPDM |
Stem | SS431 |

Customization Support: Modified dimensions, coatings, branding, and packaging options
Quality Assurance: ISO 9001 certified manufacturing with complete material traceability
Competitive Pricing: Direct factory pricing with no intermediary margins
Global Compliance: CE, UKCA, and WRAS certifications for international market access
Technical Expertise: Engineering support for product selection and application guidance
Reliable Supply: Efficient production planning and logistics for on-time delivery

Water Treatment Systems: Distribution networks, filtration units, and pumping stations
HVAC Services: Chilled water circuits, cooling towers, and air handling systems
Industrial Processing: Cooling water lines, process fluid control, and utility services
Fire Protection: Sprinkler systems and hydrant supply lines
Building Services: Plumbing systems and mechanical equipment rooms
General Industry: Various fluid handling applications requiring reliable manual control
As an experienced China OEM valve supplier, we provide high-quality industrial butterfly valves featuring ductile iron bodies, CF8M stainless steel discs, EPDM seats, and hand lever operation for water treatment, HVAC, industrial processing, and general fluid control applications worldwide.
This article presents Tianjin Worlds Valve Co., Ltd. as a specialized manufacturer of high-quality butterfly valves for global industrial markets. It highlights the company's mission to provide precision-engineered flow control solutions, emphasizing key strengths such as uncompromising material integrity (using ductile iron, CF8M stainless steel), application-specific engineering for various valve types (resilient-seated, high-performance, lined), and flexible OEM/ODM customization services. The article underscores its commitment to certified quality (ISO 9001, CE, UKCA) and positions the company not just as a supplier, but as a reliability partner with decades of export experience to over 50 countries, supporting broader project needs with complementary gate and check valves.
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This comprehensive guide details the five essential design pillars that distinguish a high-quality butterfly valve: disc design and material, seat sealing performance, body and connection construction, stem integrity, and bearing/actuation systems. It explains how these features directly impact valve lifespan, reliability, and total cost of ownership. The article also provides a practical pre-purchase checklist for engineers and buyers, covering pressure ratings, material compatibility, certifications, and supplier support. Highlighting the expertise of Tianjin Worlds Valve Co., Ltd., it illustrates how their certified, customizable butterfly valves are engineered to meet demanding global industrial standards.
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