A V-band coupling for use on an explosion-proof enclosure. The V-band coupling includes a V-band having a toughened layer along its interior surfaces for gripping the flanges on the enclosure which the V-band engages when it is installed on the enclosure. The roughened layer results in an increased coefficient of friction between the V-band and flanges which is effective for reducing the load experienced by the trunnion joints of the coupling during explosion events thereby allowing the explosion-proof enclosure to withstand high internal pressures witho...
An explosion-proof enclosure, comprising: a metal chamber having two halves which fit together at outwardly extending flanges and which define an interior cavity; and a V-band coupling constructed and arranged to grip said flanges and hold said halves together, said V-band coupling including: a retaining strap; at least one trunnion joint for circumferentially joining together respective ends of the retaining strap, the trunnion joint having a yield value of circumferential tensile load beyond which the trunnion joint is subject to failure; at least one ...
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