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Cast Steel CF8M 48” 150LB RF Flange Triple Offset Metal-To-Metal Butterfly Valve With Gear Box

  • Nominal Diameter:48”(DN1200)
  • Bore: Full Bore
  • Nominal Pressure:150LB
  • Material: CF8M
  • Operation: Gear Box
  • Design Standard: API609
  • Test/Inspection: API598
  • End Connection: RF FLANGE
  • Flange standard: ASME/ANSI B16.47
  • Top Flange: ISO5211

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Product Description:

What is an RF flange Triple Offset metal-to-metal butterfly valve?

The RF flange triple eccentric metal-to-metal butterfly valve is an advanced fluid control valve that combines an RF flange connection, a triple eccentric design, and a metal-to-metal seal. The RF flange connection ensures a strong pipe connection, and the three-eccentric design includes eccentricity in the three directions of axis, radius and Angle, reducing operating torque, improving sealing performance and extending valve life. At the same time, the metal-to-metal seal ensures excellent performance under high temperatures, high pressure and corrosive media. These valves are widely used in industrial applications that require high reliability and corrosion resistance, such as fluid control systems in petrochemical, energy production and chemical engineering.

RF flange Triple Offset metal to metal butterfly valve how to work

The working principle of the RF flanged triple eccentric metal-to-metal butterfly valve is based on its unique design. In the closed state, the butterfly valve’s RF flange connection ensures a solid pipe connection, while the three-eccentric design includes eccentricity in three directions: axial, radius and Angle. When the valve needs to be opened, the disc begins to rotate, and the three-eccentric design effectively reduces operating torque at start-up while maintaining sealing performance. As the disc rotates, the RF flange ensures close contact with the valve sealing surface, effectively preventing fluid leakage. In the fully open state, the disc is parallel to the fluid flow direction, allowing the fluid to pass freely. The metal-to-metal seal ensures the valve’s superior performance in high temperature, high pressure and corrosive media, making it ideal for efficient control of fluid flow.

RF flange Triple Offset metal to metal butterfly valve product overview

1. RF flange connection
The use of RF flange connection mode, to ensure a solid pipe connection, improve the tightness of the flange connection, suitable for high requirements of industrial environment.

2. Three-eccentric design
The three-eccentric design includes eccentricity in the three directions of axis, radius and Angle, which reduces the operating torque at start-up and improves the sealing performance and valve life.

3. Metal-to-metal seal
The valve seal section is designed metal-to-metal to provide excellent corrosion resistance and high temperature and pressure performance, adapting to harsh industrial conditions.

4. Fluid control accuracy
The valve can achieve fast and accurate fluid control, and is widely used in industrial processes requiring high-precision fluid control.

5. High temperature and high-pressure resistance
Suitable for high temperature and high-pressure environment, such as petrochemical, electric power and other fields, to ensure the stable operation of the valve under extreme conditions.

6. Leak-proof design
The RF flange and Triple Offset design together ensure excellent sealing of the valve in the closed state, effectively preventing fluid leakage.

7. A variety of material selection
The main components of the valve are made of corrosion-resistant and wear-resistant metal materials, such as stainless steel, alloys, etc., to meet the requirements of different media.

8. Widely used
It is widely used in the fluid control system in petrochemicals, natural gas, chemistry, electric power and other fields, especially for the process with strict requirements for fluid control.

9. Optional operation mode
The valve can be equipped with manual operation, electric actuator and other operating devices to meet the needs of different systems.

RF flange Triple Offset metal-to-metal butterfly valve applications

1. Petrochemical industry: Used for high-precision fluid control of various chemical media in oil refineries and chemical production, especially under high temperature and high-pressure conditions.

2. Natural gas transmission system: used in the natural gas pipeline system to control the flow of natural gas and ensure the stable and reliable operation of the system.

3. Power industry: In thermal power stations and nuclear power plants, it is used to control the flow of water, steam and other working substances to ensure the normal operation of the power system.

4. Chemical industry: Used in the chemical production process, the chemical medium involving corrosion and high temperature and pressure is precisely controlled to ensure the stability and safety of production.

5. Water treatment and sewage treatment: in tap water treatment, wastewater treatment and other environments, for accurate control of water flow, to maintain the efficient operation of the treatment system.

6. Food and beverage production: used to control the flow of various liquids and gases in food and beverage production to ensure product quality and hygiene standards.

7. Offshore engineering: In offshore engineering such as offshore oil fields and offshore platforms, it is used to control the flow of seawater, oil and natural gas.

8. High-temperature and high-pressure process: In the industry it needs to withstand high-temperature and high-pressure processes, such as high-temperature heat exchange and high-temperature furnace melting.

Standards for Triple Offset butterfly valves

Valve Size DN50-1600, NPS 2-60
Pressure Rating N1-100, 150LB-600LB
Materials WCB, LCB, LC1, CF8, CF8M, CF3, CF3M, 4A, 5A, WC6, WC9, C95800
Design and Manufacturing Standards API 609, EN 593
Face to Face Standards API 609, EN 558, ISO 5752
Flange Size Standards ASME B 16.5, ASME B16.47, EN 1092-1, GOST 54432, JIS 2220
Stress Test Standards API 598, EN 12266-1
Fire Safety Test Standard API 607
Quality/Product Certifications ISO9001, ISO14001, ISO18001
Unorganized Emissions ISO 15848-1, API 622
National ACE NACE MR0175, NACE MR0103
Valve Operator Options hand wheel, worm wheel, electric actuator, pneumatic actuator, hydraulic actuator.
Shutdown Level API 598 (Zero leakage)
Aperture full aperture
Process Connection Types sandwich, flange, lug, welding


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