Ground pumps of the type GR 400/40 (8G-8*) and electrical units based on them are designed to pump high abbrous hydroxies with pH 6 ... 12, density up to 2200 kg/m3, with a temperature of 278 to 343 K (from 5 to 70 ° C), voluminous concentration of solid inclusions up to 40%, with the size of solid particles up to 6 mm, micro -hardness up to 11000 MPa.
In the unit of the electric pump, the transmission of the torque from the electric motor to the soil pump is carried out through the sleeve-jacket coupling.
The scope of soil pumps GR 400/40 (8GR-8*) enrichment factories, metallurgical enterprises.
The structural scheme of the designation of the electrician unit during order, correspondence and technical documentation:
"Unit GR 400/40 - 1.6", where
GR - type of soil pump;
400 - nominal feed in m3/h;
40 - nominal pressure in m;
1.6 - the maximum density of a hydros mixture pumped by the pump unit, reduced by 1000 times, kg/m3.
*in the brackets indicate the designation of the pump operating until 1973
Technical characteristics of the soil pump GR 400/40 (8GR-8*) and an electric pump unit based on it 
