In the headlight washer, a check valve 8 is installed between the pump and jets, which prevents leakage of liquid after the washer is turned off, as a result, time is not lost to fill the tubes when the pump is turned on.
Pic. 8-25. Window washer diagram: 1 - headlight washer reservoir; 2 - headlight washer pump; 3 - windshield washer jets: 4 - tees; 5 - headlight washer jets; 6 - windshield washer reservoir: 7 - windshield washer pump; 8 - check valve