Lately i have been leaving my machine and buffer tank in the van to save time but the customers tap can't seem to keep up, i have 50m of 1/2 hose on a normal hoselock reel running to a wheelie bin in the van which has a float valve fitted near the top then a 3/4 on off valve at the bottom, connected to my machine via about 2m of 3/4 hose but i seem to do about 20mins of solid cleaning before running out of water then having to wait ages for it to refill, what can i do to speed up the fill rate?