Today I had a solids-containing spray liquor (wettable sulfur + DithaneNeoTec, something quite common)) in the device, The flutter valve located at the bottom of the pump made by spray liquid thing I noticed when that came out top. Twice depressing the pump then destroyed by abrasion the "pot" gaiter. This does not deserve the name. It is more or less to a plastic disk to me only the hint of a pot edge. No wonder she was so quickly broken. A proper cup seal looks different. One can only be described as a design flaw. Or is the rapid wear intends? On the syringe you can hardly earn anything at 20 euros normal price. So make it about the spare parts. Double left-handers have to visit the artisans
The original spare part for about 6, - Euro per traded Two Pack plus postage. It is offered en masse in the net. The leaves have a deep insight.
A proper cup seal same Durmessers for a bicycle pump will cost 99 cents each. Unfortunately, that has to be mounted with ingenuity, but then keeps almost forever. For me, the unit falls under the category trash.