For 4mm to 5mm pipes.
Windscreen Screen Washer Hose Non Return One Way Valve fits 3 to 5mm ID Tube
Universal One Way Inline Washer Valve For Windscreen Wiper Jet Pump Front & Rear
Classic Car Universal Windscreen Washer Bottle Foot One Way Valve, GWW506 WSB139
2x Straight One Way Inline Washer Valve Windscreen Wiper Jet Pump Front /Rear
One Way Non Return Valve for Inline 4mm - 5mm Pipe Windscreen Washer Cleaning
2 x One Way/Non Return Valves for 4 - 5mm Windscreen Washer Pipes Brand
