Phone: +91 93135 43530
Address: 133/1 Ground, Mansuri Block, Opp. Dudheshwar Water Tank, Ahmedabad-380004, Gujarat, India
stainless steel CF8 butterfly valve manufacturer in India, CF8M stainless steel butterfly valve supplier, CF3 CF3M low carbon stainless steel butterfly valve exporter, and industrial stainless steel butterfly valves for chemical and water applications are among the most searched long-tail keywords in the global valve industry today. Stainless steel butterfly valves manufactured using CF8, CF8M, CF3, and CF3M grades are widely preferred for their excellent corrosion resistance, mechanical strength, hygienic properties, and long service life. KELOR is recognized as India’s biggest manufacturer, supplier, and exporter of industrial valves, offering a complete range of stainless steel butterfly valves that meet international B2B requirements across oil & gas, chemical, water treatment, power, and process industries.
Introduction to Stainless Steel Butterfly Valves
A butterfly valve is a quarter-turn rotary motion valve used to stop, regulate, and start the flow of fluid. The valve consists of a disc mounted on a rotating shaft. When the valve is fully closed, the disc blocks the flow passage; when fully open, the disc rotates a quarter turn to allow unrestricted flow.
In industrial environments where corrosion resistance, cleanliness, and durability are critical, stainless steel butterfly valves are the preferred choice. Among stainless steel casting grades, CF8, CF8M, CF3, and CF3M are the most widely used materials for valve bodies and discs.
KELOR designs and manufactures stainless steel butterfly valves using globally accepted ASTM casting grades, ensuring compliance with ISO, API, and EN standards. These valves are engineered for long-term performance in aggressive and hygienic applications.
Understanding Stainless Steel Casting Grades
Stainless steel valve components are commonly produced by casting rather than forging, especially for complex shapes such as butterfly valve bodies. ASTM A351 and ASTM A743 standards define stainless steel casting grades for pressure-containing parts.
CF8, CF8M, CF3, and CF3M are casting equivalents of popular wrought stainless steels:
- CF8 – Equivalent to SS 304
- CF8M – Equivalent to SS 316
- CF3 – Low carbon equivalent of SS 304L
- CF3M – Low carbon equivalent of SS 316L
These materials are selected based on corrosion resistance, temperature limits, weldability, and service environment.
CF8 Stainless Steel Butterfly Valve Material
Material Overview
CF8 is an austenitic stainless steel casting grade equivalent to AISI 304 stainless steel. It contains approximately 18–20% chromium and 8–10.5% nickel, providing good corrosion resistance and mechanical strength.
Chemical Composition (Typical)
- Chromium: 18–20%
- Nickel: 8–10.5%
- Carbon: Max 0.08%
Key Properties
- Good resistance to atmospheric and mild chemical corrosion
- Excellent toughness at low and high temperatures
- Good castability and machinability
Applications
- Water supply and distribution
- HVAC systems
- Food and beverage processing
- General industrial services
CF8 butterfly valves from KELOR are widely used in cost-effective applications where chloride resistance is not a primary concern.
CF8M Stainless Steel Butterfly Valve Material
Material Overview
CF8M is the most popular stainless steel casting grade for butterfly valves in corrosive environments. It is the casting equivalent of AISI 316 stainless steel, containing molybdenum for enhanced corrosion resistance.
Chemical Composition (Typical)
- Chromium: 18–20%
- Nickel: 9–12%
- Molybdenum: 2–3%
- Carbon: Max 0.08%
Key Properties
- Excellent resistance to chlorides and acids
- Superior pitting and crevice corrosion resistance
- High strength and durability
Applications
- Chemical and petrochemical industries
- Marine and offshore systems
- Pharmaceutical plants
- Oil & gas pipelines
KELOR CF8M stainless steel butterfly valves are extensively exported to the Middle East, Europe, Africa, and Southeast Asia for demanding industrial services.
CF3 Stainless Steel Butterfly Valve Material
Material Overview
CF3 is a low carbon version of CF8, equivalent to AISI 304L stainless steel. The reduced carbon content minimizes carbide precipitation during welding, improving intergranular corrosion resistance.
Key Advantages
- Excellent weldability
- Reduced risk of sensitization
- Improved corrosion resistance in welded zones
Applications
- Hygienic process lines
- Food and dairy plants
- Water treatment facilities
CF3 butterfly valves are commonly specified when frequent welding or high-purity service is involved.
CF3M Stainless Steel Butterfly Valve Material
Material Overview
CF3M is the low carbon version of CF8M and is equivalent to AISI 316L stainless steel. It combines molybdenum-enhanced corrosion resistance with excellent weldability.
Key Properties
- Outstanding resistance to aggressive chemicals
- Superior performance in chloride-rich environments
- Ideal for sanitary and pharmaceutical applications
Applications
- Pharmaceutical and biotech industries
- Chemical processing plants
- Desalination and RO systems
KELOR CF3M stainless steel butterfly valves are engineered for long service life in the most demanding process conditions.
Comparison Table: CF8 vs CF8M vs CF3 vs CF3M
| Grade | Equivalent Wrought Grade | Carbon Content | Corrosion Resistance | Typical Use |
|---|---|---|---|---|
| CF8 | SS 304 | Up to 0.08% | Good | Water, HVAC |
| CF8M | SS 316 | Up to 0.08% | Excellent | Chemical, Marine |
| CF3 | SS 304L | Max 0.03% | Very Good | Welded systems |
| CF3M | SS 316L | Max 0.03% | Superior | Pharma, Chemical |
Why Choose KELOR Stainless Steel Butterfly Valves
KELOR stands as India’s biggest manufacturing, supplier, and exporter of industrial valves, offering a complete range of stainless steel butterfly valves in CF8, CF8M, CF3, and CF3M materials.
- Advanced manufacturing facilities in India
- Strict quality control and testing
- Global export experience
- Customizable solutions for B2B buyers
Our valves are trusted by EPC contractors, OEMs, distributors, and industrial end users worldwide.
Frequently Asked Questions (FAQ)
- What is CF8 material in butterfly valves?
CF8 is a stainless steel casting grade equivalent to SS 304, used for general corrosion-resistant applications. - What is the difference between CF8 and CF8M?
CF8M contains molybdenum, offering better corrosion resistance than CF8. - Why is CF3 preferred for welded applications?
CF3 has low carbon content, reducing carbide precipitation during welding. - Is CF3M suitable for pharmaceutical industries?
Yes, CF3M is widely used in pharma due to its high corrosion resistance and cleanliness. - Are CF8M butterfly valves suitable for marine use?
Yes, CF8M performs well in chloride-rich marine environments. - Does KELOR manufacture all these grades in-house?
Yes, KELOR manufactures and supplies CF8, CF8M, CF3, and CF3M butterfly valves. - What standards do KELOR valves comply with?
Our valves comply with ASTM, API, ISO, and EN standards. - Can these valves be used for high temperature service?
Yes, stainless steel butterfly valves perform well at elevated temperatures. - Do you offer export documentation?
KELOR provides complete export and quality documentation. - How to select the right stainless steel grade?
Selection depends on fluid type, temperature, pressure, and corrosion environment.
Conclusion: Understanding CF8, CF8M, CF3, and CF3M stainless steel materials is essential for selecting the right butterfly valve for industrial applications. With KELOR’s expertise and global presence, buyers can confidently source high-quality stainless steel butterfly valves from India for reliable, long-term performance.