Centrifugal cantilevered single-block electric pumps of KM type are intended for pumping service water under steady-state conditions (with exception of sea water) with рН=6 – 9, containing mechanical admixtures not more than 0,1 % by weight and the size of particle of 0,2 mm maximum, as well as the other liquids similar to water in density and chemical activity having a temperature of minus 10 up to + 85 ºС.
Electric shock protection class I GOST 12.2.007.0-75. Electric pumps are related to the items of aspect I (repairable ones) as per GOST 27.003-90. Climatic version У, location category 3.1 as per GOST 15150-69. Electric pumps are not intended for installation in explosion and-fire hazard premises.
The electric pump consists of the centrifugal pump and flanged electric motor with elongated shaft end. The sense of shaft rotation – clockwise as viewed from the electric motor end. The arrow indicating the direction of rotation is arranged on the pump casing.
The casing of the pump is a iron casing in which the inlet and outlet branches, spiral chamber and supporting legs are executed. The casing of the pump is connected to the electric motor by the connecting piece.
The impeller is an iron casting and is secured on the shaft by using the key and screw or by the nut.
The sealing of the shaft – is a single soft stuffing box. To prevent a wear of the shaft there is a protection sleeve just under the stuffing box.
|Flow (nomin.), m³/h||25|
|Rotation speed, rpm||2900|
|Rotation speed, c˜¹||48|
|Pump inlet pressure, kgf/sm², max||3.5|
|Type of current||AC|
|Admissible positive suction head, m, max||3.8|
For example KM50-32-125a-t-U3.1 TU3631-216-05747979-2003, where: