What is the difference between 150 and 300 flanges? The main difference between 150 and 300 flanges is their pressure rating, which reflects the maximum pressure each flange can withstand at a given temperature.
150 flanges (also known as Class 150 flanges) are used in non-pressurized environments and can withstand pressures up to 285 psi at room temperature. On the other hand, Type 300 foil (also known as Grade 300 foil) is used in high-pressure applications and can withstand pressures up to 740 psi under the same conditions.
What is the difference between 150 and 300 flanges? Class 300 flanges are more appropriate for situations that demand higher pressure tolerance, while Class 150 flanges are generally used in less critical environments.
What Is The Difference Between 150 And 300 Flanges About Pressure And Temperature Ratings
Material | Temperature (°F) | Class 150 Flange Pressure Rating (psi) | Class 300 Flange Pressure Rating (psi) |
Carbon Steel (A105) | 100 | 285 | 740 |
200 | 260 | 675 | |
300 | 230 | 655 | |
400 | 200 | 635 | |
500 | 170 | 600 | |
Stainless Steel (A182 F304) | 100 | 275 | 720 |
200 | 235 | 620 | |
300 | 215 | 560 | |
400 | 195 | 515 | |
500 | 170 | 480 |
What Is The Difference Between 150 And 300 Flanges About Flange Dimensions
Nominal Pipe Size (NPS) | Class | Outside Diameter (OD) | Bolt Circle Diameter (BCD) | Number of Bolts | Bolt Hole Diameter | Flange Thickness (T) |
1″ | 150 | 4.25″ | 3.125″ | 4 | 0.625″ | 0.44″ |
300 | 4.88″ | 3.625″ | 4 | 0.75″ | 0.69″ | |
2″ | 150 | 6.00″ | 4.75″ | 4 | 0.75″ | 0.56″ |
300 | 6.50″ | 5.00″ | 8 | 0.75″ | 0.81″ | |
4″ | 150 | 9.00″ | 7.50″ | 8 | 0.75″ | 0.69″ |
300 | 10.75″ | 8.50″ | 8 | 0.88″ | 1.06″ | |
6″ | 150 | 11.00″ | 9.50″ | 8 | 0.88″ | 0.88″ |
300 | 14.00″ | 11.75″ | 12 | 0.88″ | 1.31″ |
What Is The Difference Between 150 And 300 Flanges About Applications And Usage
Application Area | Class 150 Flange | Class 300 Flange |
Water Supply Systems | Suitable for lower-pressure water pipelines, irrigation, and distribution systems. | Used in higher-pressure applications like municipal water supply and industrial water systems. |
Oil and Gas Pipelines | Adequate for low-pressure pipelines, low-pressure fuel distribution, and natural gas transmission. | Frequently used in high-pressure oil and gas extraction and refining environments. |
Steam Systems | Suitable for low-pressure steam lines, boiler fittings, and general HVAC systems. | Common in high-pressure steam applications in power plants and heavy industry. |
Chemical Processing | Adequate for low-pressure chemical transport and storage systems. | Typically chosen for high-pressure chemical processing where safety and durability are essential. |
Petrochemical | Useful for non-critical, low-pressure applications. | Often employed in high-pressure petrochemical refining systems, including cracking units and pipelines. |
Pharmaceutical | Used in systems handling low-pressure fluids and gases. | More suited for handling high-pressure sterilization systems and process fluid lines. |
What Is The Difference Between 150 And 300 Flanges About Material
Material | Class 150 Flange | Class 300 Flange |
Carbon Steel (A105) | Commonly used in low-pressure water and air systems. | Frequently used in high-pressure steam and gas systems. |
Stainless Steel (A182) | Ideal for low-pressure corrosive environments, such as chemical transport. | Chosen for high-pressure corrosive environments, including chemical processing and offshore industries. |
Alloy Steel (F11, F22) | Limited use in low-pressure, high-temperature applications. | Extensively used in high-pressure, high-temperature environments, especially in power generation. |
Copper-Nickel (C70600) | Adequate for marine environments, desalination, and shipbuilding. | Often used in high-pressure marine and offshore drilling systems. |
Cast Iron | Often used in lower-pressure, non-critical applications like HVAC and plumbing. | Rarely used due to lower pressure tolerance and brittleness. |
What Is The Difference Between 150 And 300 Flanges About Installation Considerations
Installation Aspect | Class 150 Flange | Class 300 Flange |
Bolting | Requires fewer bolts due to lower pressure demands. | Requires more and larger bolts to withstand higher pressures. |
Gasket Selection | Soft gaskets like rubber are often sufficient for low-pressure systems. | High-pressure systems require stronger gaskets, such as spiral-wound or metal gaskets. |
Torque Requirements | Less torque is required for tightening, reducing installation complexity. | Higher torque is required to ensure a proper seal due to the higher pressures involved. |
Alignment and Flange Faces | Easier to align due to lower bolt numbers and torque requirements. | More critical to ensure proper alignment because of the higher torque and bolt requirements. |
Weight | Typically lighter and easier to handle. | Heavier and may require more equipment or manpower for installation. |
What Is The Difference Between 150 And 300 Flanges About Cost
Nominal Pipe Size (NPS) | Class | Material | Approximate Cost (USD) |
2″ | 150 | Carbon Steel A105 | $15 |
300 | Carbon Steel A105 | $30 | |
4″ | 150 | Stainless Steel A182 | $40 |
300 | Stainless Steel A182 | $90 | |
6″ | 150 | Alloy Steel F11 | $100 |
300 | Alloy Steel F11 | $180 |
Elite Piping Manufacture Co., Ltd. is a prominent supplier of high-quality flanges and fittings, focusing on various classifications, including Class 150 and Class 300 flanges.
What is the difference between 150 and 300 flanges? This distinction is essential for engineers and contractors, as Class 150 flanges are intended for lower pressure applications, typically managing pressures up to 285 psi. In contrast, Class 300 flanges are capable of withstanding higher pressures, reaching up to 740 psi. By providing a comprehensive range of flanges, Elite Piping ensures that clients can access the appropriate specifications for their projects.
The company’s dedication to quality and adherence to industry standards guarantees that each flange meets rigorous performance criteria, making them suitable for diverse applications in water supply, oil and gas, chemical processing, and beyond.
GET IN TOUCH
Company:
Elite Piping Manufacture Co., Ltd.
Factory Address：
Office # 805, Building No. 6 Poly Metropolitan, Yongshum Town, Tongzhou District, Beijing, China.
Contact Person：
Michael
Contact Numbers：
+86 186 1829 1381
Email:
elite@elitepiping.com
