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Aero Precision provides OEM part support for military aircraft operators across more than 20 aircraft


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The fill port is used to pressurize the coupler. There is an internal pressure switch that will indicate a coupler fault if the pressure is too low. That family of couplers require somewhere around 8 or 9 PSIG. Having internal dry air is good in an unpressurized mounting location to help prevent coupler internal arcing.

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