Code 61 and Code 62 are two widely used flange fitting systems in hydraulic applications.
Understanding the differences between them is important for engineers and professionals who work with hydraulic systems.
In this article, we will discuss the key aspects of Code 61 and Code 62, compare them side by side, and explore their specific applications.
What are Code 61 and Code 62 Fittings?
Code 61 and Code 62 are hydraulic flange fittings that are used to connect hoses and tubes to other components in a hydraulic system.
They are designed to provide a reliable and leak-free connection, even under high-pressure and high-vibration conditions. The main difference between the two systems is the pressure rating and the sealing mechanism.
Code 61 Fittings
Code 61 fittings are rated for a maximum pressure of 3000 psi. They use an O-ring as a sealing mechanism, which is compressed between the flange head and the flat face of the mating flange.
The O-ring provides a reliable seal, but it requires a smooth and flat surface to work properly. Code 61 fittings are suitable for low to medium pressure applications, such as industrial machinery, mobile equipment, and agricultural equipment.
Code 62 Fittings
Code 62 fittings are rated for a maximum pressure of 6000 psi. They use a metal-to-metal seal as a sealing mechanism, which is achieved by the two mating flanges being pressed together with a serrated face. The metal-to-metal seal provides a more robust and reliable seal, even under high-pressure and high-vibration conditions.
Code 62 fittings are suitable for high-pressure applications, such as oil and gas equipment, mining equipment, and offshore drilling equipment.
Code 61 vs Code 62: A Side-by-Side Comparison
To help you better understand the differences between Code 61 and Code 62 fittings, we’ve put together a comparison table:
| Parameter | Code 61 | Code 62 |
|---|---|---|
| Maximum pressure | 3000 psi | 6000 psi |
| Sealing mechanism | O-ring | Metal-to-metal |
| Surface finish requirement | Smooth and flat | Rough and serrated |
| Applications | Low to medium pressure, Industrial machinery, Mobile equipment, Agricultural equipment | High-pressure, Oil and gas equipment, Mining equipment, Offshore drilling equipment |
Applications of Code 61 and Code 62
Code 61 and Code 62 fittings are used in a wide range of hydraulic applications.
Here are some examples:
- Code 61 fittings are commonly used in industrial machinery, such as hydraulic presses, injection molding machines, and machine tools. They are also used in mobile equipment, such as excavators, backhoes, and skid steer loaders.
- Code 62 fittings are commonly used in high-pressure applications, such as hydraulic fracturing, offshore drilling, and mining. They are also used in oil and gas equipment, such as wellhead control systems and subsea production systems.
Conclusion
In conclusion, Code 61 and Code 62 fittings are two widely used flange fitting systems in hydraulic applications.
While both provide a reliable and leak-free connection, they differ in terms of pressure rating and sealing mechanism.
Code 61 fittings are suitable for low to medium pressure applications, while Code 62 fittings are suitable for high-pressure applications.
When selecting the appropriate flange fitting for your hydraulic system, it is important to consider the specific application requirements and the pressure rating.