Pumps of Bulgaria - enterprise VIPOM JSC -

      The type MTR pumps are centrifugal, multi-stage, horizontal, sectional, single-entry. They are designed for pumping water with temperatures up to 80°C and oil products.
      The discharge flange is directed vertically upwards (perpendicular to the axis of rotation), while the suction flange is at 90° to the discharge flange.
      The pumps are manufactured with a stuffing box or a mechanical seal.
      The pumps were tested in compliance with EN ISO 9906:1999, for water with temperature of 20°C.

The indication of the pumps includes the following symbols:

11MTR32.2B-MS-01

11	-	Rated flow (l/s)
MTR	-	Multi-stage, with roller bearings, redesigned
32	-	Rated head per stage (MWC)
2	-	Number of stages
A, (B)	-	Undercut impeller version
MS	-	Mechanical seal (if this indication is missing this means that the pump has a soft packing)
01	-	Construction materials

The material of the basic parts of the pump according to the different versions.

Detail	Construction materials
Detail	Standard	01	02	03
Suction body	Cast iron	Cast iron	Bronze	Stainless Steel
Disc	Cast iron	Cast iron	Bronze	Stainless Steel
Intermediate body	Cast iron	Cast iron	Bronze	Stainless Steel
Guiding apparatus	Cast iron	Cast iron	Bronze	Stainless Steel
Diffuser	Cast iron	Cast iron	Bronze	Stainless Steel
Discharge body	Cast iron	Cast iron	Bronze	Stainless Steel
Safety sleeve	Cast iron	Cast iron	Bronze	Stainless Steel
Stuffing-box flange	Cast iron	Cast iron	Bronze	Stainless Steel
Compensating sleeve	Cast iron	Cast iron	Bronze	Stainless Steel
Packing disc	Cast iron	Cast iron	Bronze	Stainless Steel
Impeller	Cast iron	Bronze	Bronze	Stainless Steel
Sealing ring	Bronze	Bronze	Bronze	Stainless Steel
Intermediate sleeve	Bronze	Bronze	Bronze	Stainless Steel
Bearing housing	Cast iron
Cap	Cast iron
Mechanical seal	Ceramics / Graphite/ Stainless Steel/ Viton
Safety sleeve	Steel Chrome 13%		Stainless Steel
Shaft	Carbon steel	Steel Chrome 13%		Stainless Steel
Balancing disc	Carbon steel	Steel Chrome 13%		Stainless Steel
"O"-ring	Butyl rubber
Soft packing	Cotton		PTFE (Teflon)
Indication of materials