What causes this leaking out of the release hole on the MLA-RA9 is typically there is dirt or debris on the diaphragm of the pressure regulator. Try opening the top and flushing and cleaning out the interior pieces. If this does not work then the piece of dirt and debris has rubbed on the surface enough to cause permanent damage and the unit will have to be replaced if you do not want the unit to continue leaking.
If you have any further questions on this please call us at the factory 800-654-4086.
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