A system for automatically removing by suction urine voided by a female. The system includes an external catheter, a canister and a suction regulator. The external catheter is applied at the urethra opening to receive urine voided by the female. The canister collects the urine and is coupled to a source of suction having a first value. The suction regulator is interposed between the external catheter and the canister to regulate the amount of suction to a regulated value which is applied the external catheter, whereupon urine from the external catheter is carried through the suction regulator and into the canister. The system may also include an adapter or an adapter/splitter for to connection between the source of suction and the canister.