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Specification:

Code 61 & Code 62

Code 61 and Code 62 are the two pressure classes of SAE Flanges. Code 61 represents the pressure class 3000 PSI, while Code 62 represents pressure class 6000 PSI. Code 61 is designed to be used with low-pressure applications while Code 62 works with high-pressure devices. SAE Flanges are used in hydraulic applications for connection purposes for pipes, tubes, hoses, and other devices.

Straight SAE Flange
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1. What are Code 61 and Code 62 ?

Flanges are attaching instruments to other objects or systems. Flanges are of various types and are produced for different applications. SAE Flanges are one of the popularly used flange types worldwide. They are used as an alternative attachment to large-sized systems and also suitable for high-pressure applications. They are available in different sizes ranging from 3/8 inches to 5 inches. 

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SAE Flanges are produced in two different pressure classes and these are known as Code 61 and Code 62. Code 61 stands for the SAE Flange designed with 3000 PSI and Code 62 represents SAE Flange with 6000 PSI. SAE Flanges are made following the SAE J518 and ISO 6162 standards. Sometimes, they are referred to as J518. Also, another feature that makes the flange unique is the interchangeability option with other standards such as ISO 6141, JIS B 8363, and DIN 20066 standards.

Furthermore, Code 61 and Code 62 are made of stainless steel SS316L and Carbon Steel S355/ST52.3. Both materials are suitable for use in highly corrosive and harsh environments. No doubt, this is one of the factors that account for the high durability level of Code 61 and Code 62. Also, there’s a wide variety of connection options which includes Weld In, Threaded NPT, Threaded BSPP, and Weld-on connection types.

2. What is the Installation Process for Code 61 and Code 62?

Code 61 and Code 62 are easy to install following these simple methods below:

  • Clean out dirt and other contaminants from the flange surface.

  • Ensure the flange is well-aligned before placing the O-ring into the female groove. Insert the washer, cap screws, and bolts into their designed holes.

  • Slowly tighten the cap screws to the O-ring seat using your hand.

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Refer to the table below to get the right torque value.

The first table shows the torque value for Code 61:

The next table shows the torque value for Code 62:

3. What are the advantages of Code 61 and Code 62?

Code 61 and Code 62 are very advantageous when used. This is one of the reasons for the wide usage of the flange. Some of the advantages of the flange are explained below:

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  • Code 61 and Code 62 give a larger capacity for connection as it can accommodate up to 5 inches tubes, pipes, etc provided they are compatible in standards.

  • Code 61 and Code 62 are also suitable for use with high-pressure applications. While Code 61 allows a working pressure of 3000 PSI, Code 62 gives a larger room for pressure up to 6000 PSI or 420 bars.

  • Code 61 and Code 62 are designed in a way to ensure easy disassembly through the use of a split flange.

  • Code 61 and Code 62 also allow low tightening torques compared to other flange types and this also improves the efficiency of the machine.

  • Only a seal is required between pipes and the system.

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