1. Pumps of I-generation: sand, slurry, sludge, dredge at al. Pumps, flow geometry of recurring pumps produced in the USSR and the CIS, but manufactured using modern technologies from quality materials with modern design solutions. Their operating time is 2-10 times greater than the analogues of other domestic producers. However, since the geometry of the flow part did not change significantly, the efficiency coefficient remains at the level of domestic analogues (55-70%).

2. Pumps of II-generation: high-pressure, high reliability, sand, sludge, special at al. They are used usually at processing plants for hydrotransportating of crushed products. They are made on the basis of our modern run-time constructive solutions, but the geometry of the flow part corresponding analogues of world's leading manufacturers.

These pumps have a high efficiency coefficient (up to 82%), but they compare favorably to analogues produced by western companies by reinforced construction, increased reliability, loyalty to the "domestic" approach of equipment maintenance, "indestructibility" and "foolproof". Furthermore, they do not have sophisticated components that requiring a qualified staff and specialized equipment for service.

3. Pumps of II-generation: slurry, gravel, sludge et al.Are usually used, in quarries, opencast mining, on dredgers and other areas for transporting of uncrushed products, as well as the tail pumps where required pumping of large fractions and (or) larger volumes.

Pumps of the HG, GR group and others are made on the basis of our modern run-time constructive solutions, but the geometry of the flow part corresponding analogues of world's leading manufacturers.

These pumps have a high efficiency coefficient (up to 85%), and as the pumps of the previous group compare favorably to analogues produced by western companies by reinforced construction, increased reliability, loyalty to the "domestic" approach of equipment maintenance, "indestructibility" and "foolproof ". They can be manufactured in a lightweight version.

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1.   Diameter of suction branch pipe in inches (from 4" to 20");

2.    Diameter of pressure branch pipe in inches (from 3" to 16");

3.    Marking of flow part design (from 1 to 4 letters):

-    Tp - slurry (l-st generation);

-    W - high-pressure (ll-nd generation);

-    HG - gravel or slurry (ll-nd generation);

-    S - Semisubmersible;

-    UW (underwater) - submersible;

-    K - covered with corundum.

4.    Designation of two-disc pump (roman numeral). In the case of single-disc pump - there is no indication.

5.    Size class and design of bearing frame (numerals and letters (letters may be missing if bearing frame design is standard with liquid lubricant)):

-    numerals from 1 to 11 - size class of bearing frame;

-    letters:

-S-Solid lubricant;

-    L - light version for low rotation speed and dredgers;

-    V - vertical execution;

6.    Designation of modifications

-    H - with higher pressure (for pumps of of l-st generation);

-    T - enhanced option for the most severe conditions.

7.    Diameter of impeller in mm and sense of rotation:

-    diameter from 240 mm up to 1890 mm

-    R or L - sense of rotation.

8.    The width of the working chamber of the impeller in mm (from 25 to 350 mm).

9.    Symbol of enterprise -manufacturer.

Examples:

12/10HG-II-(5SL)-710R-180-PET-gravel pump, diameters of suction/pressure branch pipes are 12/10 inches, two-disc, bearing frame N² 5 of lightweight version with solid lubricant, impeller 0 is 710 mm, right-hand rotation, with working chamber width of 180 mm.

8/6WS-II-(4VS)-560R-75-PET - submersible pump high-pressure pump, diameters of suction/pressure branch pipes are 8/6 inches, two-disc, vertical bearing frame N² 4 with solid lubricant, impeller 0 is 560 mm, right-hand rotation, with working chamber width of 75 mm.

16/12ГР-II-(7)-T-840R-160-PET -ground pump of l-st generation for the most severe conditions, diameters of suction/pressure branch pipes are 8/6 inches 16/12 inches, two- disc, bearing frame N² 7 with liquid lubricant, impeller 0 is 840 mm, right-hand rotation, with working chamber width of 160 mm.

6/4W-II-(2)-400R-55-PET - high-pressure pump with diameters of suction/pressure branch pipes 6/4 inches, two-disc, bearing frame N² 2 with liquid lubricant, impeller 0 is 400 mm, right-hand rotation, with working chamber width of 55 mm.

20/16HG-II-(7)-1100R-260-PET-gravel pump (ground pump of ll-nd generation), with diameters of suction/pressure branch pipes 20/16 inches, two-disc, bearing frame N² 7 with liquid lubricant, with a working wheel 01100 mm, right rotation, with working chamber width of 260 mm