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SAE Flanges is a range of high pressure hydraulic flange which is made in accordance to SAE J518 standards. The acronym SAE stands for Society of Automotive Engineers. These flanges are used on oil hydraulic systems in many fields (shipbuilding, mobile hydraulic equipment, machine tools, earth moving machines, etc.) and where there is passage of oil under pressure.

Material:
SAE Flanges are manufactured from two kinds of material, steel ST52.3 and stainless steel AISI SS316L.

Sizes:
SAE Flanges come in two series, SAE code 61 (3000 series) and SAE code 62 (6000 series).

For code 61 (3000# series), they are available in all nominal sizes between DN10 (3/8″) and DN125 (5″).

For code 62 (6000# series), they are available in all nominal sizes between DN10 (3/8″) and DN80 (3″)

Working Pressure:
The maximum working pressure for Code 61 series are ranged from 34 Bar to 345 Bar, depends on the sizes. For Code 62 series, the maximum working pressure are 414 Bar.

However, the pressure rating of SAE flanges and connected equipment combination might vary from each other. For example: if a pipe connected to the flange has a lower maximum working pressure, it will result in an overall lower working pressure of the system. Therefore in a system, the item with the lowest pressure will be the maximum working pressure of the system.

Temperature Range:
The standard working pressure of carbon steel SAE flanges is between -40°C and +120°C. For stainless steel, the standard working pressure is between -60°C and +50°C. Working Pressure for SAE Flanges made from stainless steel and used at elevated temperatures have to be:

Reduced by 4%: +50°C to < +100°C
Reduced by 11%: +100°C to < +200°C
Reduced by 20%: +200°C to < +250°C

How SAE Flanges work:

A complete set comprises of a flat side flange and an o-ring side flange. The o-ring side flange contains a groove seat to place a rubber o-ring (normally made of NBR material). The complete set forms a seal between a flat surface and o-ring held in a recessed circular groove in the other half. Tightening the bolts draws the two halves together and compresses the O-ring.

Due to this usage of the o-ring, flanges with o-rings has an advantage over metal to metal flanges as all-metal flanges are more prone to leakage because they must be tightened to a higher, yet narrower torque range. This makes metal to metal flanges more prone to strip threads or crack.

A complete set of flange is tightened using socket head cap screws & spring washers according to recommended torque. The screw lengths are usually shorter than the overall SAE flanges length but this is normal in accordance to SAE J518 standard. Also, as per SAE J518, there are no requirements for hex nuts for securing the flanges.

Connections Type & Configurations:
For the connections of SAE flanges, it usually available in few types: threaded (NPT / BSPP), welding (Socket Weld / Butt Weld), blind flanges, and split flanges.

SAE flanges are available in two types: Flat Side and Oring Side. Flat side of SAE flange are SAE flange that come with bolt thread (UNC / Metric) and oring side of SAE flange are SAE flange that contains a groove seat to place a rubber o-ring. Flanges with oring are has an advantage of prevent leakage as all metal-to-metal flanges are more prone to leakage.

The configurations of SAE flanges are flat side, oring side or complete set. A complete set of SAE flanges are combination of flat side and oring side where it forms a seal between the flat surface and o-ring held in a recessed circular groove in the other half. By tightening the bolts, it draws flat side and o-ring side together and compresses the oring.
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SAE flange complete set is tightened by using socket head cap screws and spring washers according to the recommended torque value. According to SAE J518 standard, the lengths of cap screws are usually shorter than the overall length of SAE flange complete set.

Description:
WE-LOCK SAE flanges are made accordance with SAE J518 / ISO 6162 standard. SAE flanges are used in oil hydraulic systems, where there is below pressure oil passage. SAE flanges, also known as SAE Code 61 Flanges or SAE Code 62 Flanges. Code 61 represents 3000 PSI working pressure, while Code 62 represents 6000 PSI working pressure.

SAE Flange are available with O-ring side, flat side, or a complete set, depending on the hydraulic system requirements. The materials used to fabricate SAE flanges are steel and stainless steel. There are four type of connections for SAE flanges: socket weld, butt weld, NPT, and BSPP.

Features:

• Size Range: 1/4″ to 5″
• Design Standard: SAE J518 / ISO 6162
• Connections: Socket Weld / Butt Weld / NPT / BSPP
• Material: Steel ST52.3 / AISI SS316L
• Working Pressure: Up to 210 Bar / 420 Bar
• Brand: WE-LOCK
• Origin: INDIA