Click to expand Tap to zoom Stihl Back Flow Preventer Save £10.00 Original price £50.50 Current price £40.50 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Prevents water flowing back out of the high pressure cleaner into the drinking water supply. Includes 3/4" couplings. Suitable for Stihl pressure washers: RE 90, RE 100, RE 110, RE 120, RE 130 PLUS, RE 143 PLUS, RE 150 PLUS. (Please allow 3-5 working days for delivery)