Weihrauch HW100 Intermediate Fill Adaptor – Pre Quick Fill. Allows for fitting the detachable receiver to a 232 BAR DIN Female outlet. Can also be used for emptying the air receiver. Remember, do not bleed the line or valve if using a dedicated gun charging system, as you will vent all of the air from the HW100 resevoir. Simply close the cylinder valve, and unscrew the receiver from the adaptor, a small discharge of air is normal.