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Image courtesy of Anchor Fluid Power

Four fasteners bringing together two flanges is a popular method of connectivity in high-pressure applications. This connection allows for weight to be distributed evenly among the four fasteners, thereby reducing stress and the possibility of failing joints due to vibrations. As standards in production continue to improve,  pressure ratings are higher than the industry has seen previously, leading to greater quality. 

When properly selected, hydraulic flanges reduce the number of adapters used to plumb a hydraulic system. This, in turn, helps shrink system plumbing costs and minimize potential leakage. And their high reliability should make them the least of your worries if there’s a hydraulic system malfunction.

Four-bolt hydraulic flanges have long been a trusted connection for demanding high-pressure mobile and industrial applications.  The four-bolt flange design uses a quartet of fasteners to draw two mating flanges together. One flange contains a captive O-ring and the other a smooth machined surface, often referred to as flat-faced.  The four fasteners slip through the drilled clearance holes of the O-ring flange and screw into the threaded holes of the flat-faced flange.

When the four fasteners are properly tightened, the O-ring compresses against the flat-faced flange to complete the connection. Such a connection distributes the load across the four fasteners, reducing the likelihood of joint failure due to system vibration. The O-ring or flat-faced flange connections can be manufactured as single- or multi-piece components, where split or captive flanges encapsulate a flange head.

By Tim Abrams and Tom Jones of Anchor Fluid Power, originally published in Hydraulics & Pneumatics magazine.

For the full article visit:

http://hydraulicspneumatics.com/fittings-couplings/fit-life-connections

 

 

 

 

 

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