HORIZONTAL B SERIES //
HORIZONTAL CENTRIFUGAL PUMPS B SERIES
Horizontal Pump Applications
The INTERCAL pump B Series are specially designed for continuous operation in the harshest conditions. Its main application is for the pumping of water and other clean or slightly dirty liquids with solid particles in suspension up to a 1.2% concentration, admitting a small abrasiveness in accordance with the construction components of the pump. The main fields of application reside in the industry in general, water supplies, heating and air conditioning systems, cooling tower circuits, thermal and compressed air plants, industrial paint facilities, etc.
Description of a Horizontal B Series Pump
Unicellular closed impeller pump with axial suction and radial discharge. The diffuser is volute type forming the pump casing. Every model has as its own unique pieces the body of the pump, the impeller and the suction cover-flange. For the whole range there are 5 different supports including all the types that are distributed as shown in the table on p. 5. The pumps belonging to the same support have the axle, the bearings, the mounting flange, the full gasket, the impeller screw and other construction elements of the support in common. Given the personal INTERCAL support design, a particular description thereof is made in the next page.
The maximum permissible operating pressure in the pumps built according to Grey is 16 kg/cm2 depending on the type of flange and the temperature of the liquid.
Upper limits are reached with special features, being our Technical Department who must determine the solution in each particular case.
Each pump is designated by the internal diameter in millimeters of the suction opening, followed by another figure expressed in centimeters of the nominal diameter setting.
The impeller rotates clockwise facing the pump from the free end of its shaft.
A fairly accurate and fast selection can be done based on the basic data, flow rate and total manometric head through the families of characteristic curves. Given that the pumps’ characteristic curves are plotted according to the data obtained from laboratory tests with clear water at 20ºC, then:
- Power absorbed and with it the rated motor will vary with the specific weight and viscosity of the liquid.
- Being NPHS required an intrinsic datum to the pump according to the flow rate. The suction manometric head will vary with the vapor pressure (temperature), specific weight and atmospheric pressure.
The same conditions of service can be met with different pumps rotating at different speeds. Our characteristic curves and selection charts have been found for nominal speeds of 2.850 and 1.450 r.p.m. following the actuation by three phase electric motors of 3.000 to 1.500 r.p.m. respectively of synchronous speed for a network frequency of 50 C/s. The answer of a pump at a different speed can be found as set forth in this catalog which gives more information on these issues.