Vacuum pump for unclogging ducts and siphons ф13.5 cm black

Vacuum pump in black color of rubber and plastic handle. The handle is 24 cm long and the diameter of the rubber part is 13. 5 cm. The vacuum pump is detachable - the handle is wound to the rubber part of the thread.
It is used for unclogging canals and siphons. The pump has an easy and simple but efficient use based on the vacuum principle.The clogged channel or siphon is filled with water until it overflows, after which intensive pumping with the device on the hole begins.
The vacuum pump should be your first choice for unclogging the duct or siphon, as it offers an environmentally friendly solution to the problem. Only if you fail with it, you can resort to other "weapons", including chemicals.