Caprari SCC Double-Suction Split Case Pumps, DN100 to DN700

Double-suction split case pumps for large water duties

The Caprari SCC is a family of double-suction, horizontal split case centrifugal pumps with suction and delivery ports in line and a double shaft extension. The catalogue (code 996896B/04-26, 176 pages) lists three series, SCC, SCC-1 and SCC-2, with inlet ports from 100 to 800 mm and outlet ports from 100 to 700 mm, a maximum flow of about 9,000 m3/h and a maximum head of about 300 m, for 2 to 10 poles at 50 Hz.

The listed main applications are large heating and air-conditioning systems, water supply for domestic and industrial use, public hydraulic works, irrigation and reclamation, water supply and desalination. The catalogue gives as design points minimal vibration and noise, high energy efficiency and low life-cycle cost, and servicing without disconnecting the pipes.

Technical specification

Materials, SCC and SCC-1 standard list

The code is the series, the delivery port DN, the nominal head in metres and a letter for impeller trimming; SCC-2 gives the impeller diameter in mm instead of the head. Example from the catalogue: SCC-65-150A.

Sample unit dimensions and weights

The catalogue overall dimensions and weights page lists the bare pump for each model. Selected rows are below; dimension letters A and B follow the catalogue drawing.

Base-mounted electric pump selection pages are printed for 2-pole, 4-pole and 6-pole 50 Hz motors, with base and coupling weights; for example SCC-30-100 with 15 kW motor (frame 160M) is listed at 392.4 kg and SCC-140-150 with 250 kW motor (frame 355M) at 2,412.3 kg. Motor values are indicative, depending on the motor brand fitted.

Selection and installation notes

Select by delivery DN, flow and head from the performance curves, which cover the series model by model. Check the maximum speed for the exact model in the operating limits tables, since the same family runs from 725 rpm on the large SCC-1-20-700 to 2,900 rpm on small high-head models such as SCC-50-100. Packing is rated for 20 g/m3 of silt, while a mechanical seal allows none, so choose the seal against the water quality. Because the rotation is anticlockwise from the drive end, specify the driver direction when ordering.

The catalogue includes a standardised enclosed motor data table (starts per hour, voltage variation and moment of inertia, for 2 and 4 poles). Some larger base-mounted selections use motors marked as IE4 class under EU Regulation 2019/1781, with other classes available for non-EU markets.

Applications in GCC industries

District cooling and large chilled-water circuits, municipal transfer mains, desalination feed and product water, irrigation schemes and industrial cooling water are the duties the catalogue points to. The catalogue lists clean water only: for seawater or brine request the bronze, stainless or duplex version, since the standard list is cast iron. No ATEX, fire-pump (UL, FM or EN 12845) or API approval is printed in this catalogue, so none is claimed here.

What the three series add

SCC and SCC-1 are coded with the nominal head in metres, while SCC-2 is coded with the impeller diameter in millimetres, so SCC-2-65-250A is a DN65 pump with a 250 mm impeller. SCC-2 pumps are rated to ISO 9906 Annex 3B, a looser grade than the Annex 2B of the other two series, which matters if a project test specification names a grade. The rotation is anticlockwise on the shaft projection side, with the suction on the left and delivery on the right.

Materials change by series. The SCC and SCC-1 lists give a cast iron wear ring, while the SCC-2 list gives a bronze wear ring and a separate support bearing. Packing is the standard seal and a mechanical seal version is made on request, with a lower solids limit.

Selection and installation notes

Select a pump from the duty point: the flow, the head, the liquid and its temperature, the supply voltage and the expected operating hours. Check the electrical supply and cable size against the motor rating, install the pump as the manual shows on a firm base with pipework that does not strain the ports, protect the motor against overload and dry running, and fit non-return and isolation valves in the delivery line. Keep the installation and commissioning record, and plan routine inspection of seals, bearings and wear parts.

A large split case pump needs careful alignment of the driver and the baseplate, and the pipework must have its own supports.

Information needed for a quotation

Send the full model code, the quantity, the delivery location in Oman or the GCC, the intended use and any accessories needed, so that the complete package can be quoted together.

Documents and supply information

The manufacturer data sheet is attached to this page and should be read together with the project specification and the site risk assessment before a purchase is confirmed. Ratings, standards and dimensions are quoted as printed on that sheet. Lead time, stock position and certificates available with the shipment are confirmed in the quotation, and we supply to Oman and the wider GCC region for industrial, utility and building services projects.

Related items and documents

Other Caprari pumps are listed under pumps; the official catalogue is attached. Seven Star LLC is an independent supplier in Muscat: send flow, head, liquid and temperature, motor frequency and pole count and we will confirm the model and trimming against the Caprari catalogue before quoting.

Related Caprari products: Caprari NMC and NMCS Monobloc EN 733 Pumps, DN32 to DN150, Caprari NC.E EN 733 End-Suction Pumps for Fire-Fighting Units, Caprari P Series Vertical Lineshaft Pumps, P6P and P8P, Caprari D-M Series Submersible Drainage and Sewage Pumps, Caprari PM Series High Pressure Horizontal Multistage Pumps and Caprari Desert E4X and E6X Sand-Resistant Borehole Pumps.