Chain knocker with 3 carbide chains, 22mm T-slot (7/8")

The chain knocker from Seweri has been developed for the toughest applications in drain cleaning and in preparation for inliner rehabilitation. It has 3 chains, which are equipped with carbide. These carbide spikes destroy even very hard incrustations such as urine scale, lime and concrete. For rehabilitation purposes the surfaces of the pipes can be roughened. They are specially designed for different pipe diameter to clean optimally without damaging the pipes. Due to the spiral core with a diameter of only 10mm the chain knockers are comparatively bendable.

The chain head has a 22mm T-Nut coupling for connection to drain cables from ROWO, rak, ROTHENBERGER, REMS, RIDGID, E&R and other premium manufacturers. It is 150mm long. All versions have 3 chains with carbide spikes. The chains have different lengths for pipe diameter 75mm, 100mm and 150mm. The diameter of the chain links is 4mm.