SM-SMU

SM-SMU Pump Series

SM pumps are three screws pumps for industrial use at low and medium pressure (80 bar). SM pumps represent a reliable and low noisecomponent for applications where long life and low cost are required, as in home lifts and elevators. SM pump is a priming pump assembled into a pump body. The Three screws rotate inside the body pump and the design of the screws avoid any axial load. The functional pressure develops some tolerance between the balancing piston of the main screw and the surrounding body. This creates a balancing hydrodinamic force on the screws and at the same time lubricates and cools down the sealing parts. The torque needed to move the lateral screws is transmitted hydraulically by the pumped fluid. This means that the screws rotate with no possibility of wearing. The high quality of screws manufacturing ensures a very low level of acoustic emissions and pulsation.The geometric design of the three screws creates sealing chambers. During the rotation of the screws, the main one creates a sort of cavity that holds the fluid and drives it with an axial direction from the inlet to the outlet port. Motors can be submersible or dry motors. Immersion type motors are three-phase A.C. asynchronous motors directly connected to the pump, or with flange and clutch. Enclosure IP 00, form of construction B15, insulation class F. The oil temperature should not exceed 70°C.

	SM SERIES	SMU SERIES
TYPES	Submerged
MODELS	20 - 25 - 32 - 40 - 45 - 55 - 60 - 70 - 80
CONNECTIONS	BSP Gas	NEC
SHAFT	Clockwise (from shaft end) for counter clockwise please contact Settima
PUMP BODY	Aluminium
MAIN SCREW	Steel
IDLER SCREW	Cast iron
FILTRATION	Suction filter: from 250 µm
FLOW	Flow capacity from 8 to 1.200 L/min (2.950 rpm at 50Hz)	Flow capacity from 2,5 gpm to 317gpm (1.750 rpm at 60Hz)
OPERATING PRESSURE	80 bar max	1.160 PSI max
TEMPERATURE	Up to 100°C	Up to 212°F
VISCOSITY	From 10 up to 2.000 cSt	From 46 to 9.200 SSU
SPEED	Up to 3.600 rpm
ACOUSTIC EMISSIONS	From 58 to 77 dB(A)