You are here: Home Products SMT

SMT Pump Series

  • Print

SCREW PUMPS FOR LOW & MEDIUM PRESSURE NO NOISE APPLICATIONS

SMT 1

SMT pumps are three screw pumps for industrial use at low and medium pressure (80 bar). SMT pumps represent a reliable and low noise component for many industrial applications where long life and low cost are required. SMT 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 of 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 screw 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. SMT pumps may have internal or external relief security valves.foto-prodotti-schede-SMT

Applications:

OIL & GAS

  • OIL & FUEL - Oil Lubrication Transfer services (API676)

POWER

  • Tandem solution for burner boosting systems
  • Burners injections
  • Turbine & compressors lubrication
  • Seal oil applications and services
  • Jacking oil systems,
  • Filtration, lube services
  • Oil transfer

WIND ENERGY

  • High viscosity lubrication and filtration

Gear box lube oil

  • High viscosity lube
  • Air emulsion
  • Heavy duty applications

INDUSTRIAL

  • Power hydraulics
  • Injection moulding machines
  • High and low pressure filtration systems
  • Hydro power
  • Paper industry

TECHNICAL CHARACTERISTICS

SMT

SMT AC

TYPES Dry (SMT) or submersed  (SMIT)
MODELS
 20 - 25 - 32 - 40 - 45 - 55 - 60 - 70 - 80
FLANGES ISO 3019/2
CONNECTIONS SAE 3000
INSTALLATION POSITION Free for SMT - submersed (totally or partially) for SMIT
DRIVE LOADING No axial or radial loads
SHAFT ROTATION Clockwise (from shaft end) for counter clockwise  please contact Settima
SHAFT SPEED From 500 to 3.600 rpm (depending on models, please contact Settima)
FLOWS From 8 up to 1.000 Lt/min
OUTLET PRESSURE 80 bar continuous – 100 bar intermittent
INLET PRESSURE Min. -0.7 bar max. 1.5 bar (for higher pressure please contact Settima)

FLUIDS

Please ask Settima for configuration according the fluid used.

 Mineral oil HLP and HLVP
Ecological fluids HETG-HEPG-HEE
Synthetic  fluid or  emulsions:
  • HFA oil-water  - oil min. 5%
  • HFB water-oil emulsion ≥40%
  • HFC water/glycol – water max 35 to 55%
  • HFDR phosphate ester
  • Lubrication high viscosity oils
Special synthetic fluid:
  • MIL-H, SKYDROL, others on request
VISCOSITY From 4 up to 10.000 cSt
SEALS NBR, VITON, EPDM (others on request)
ACOUSTIC EMISSIONS From 55 up to 68 db(A) at 2.750 rpm
PUMP BODY Extruded aluminium alloy
PUMP BODY (special applications) Cast iron, carbon steel inox, hardened steel
SCREW Steel for primary screw, cast iron for secondary screws
ENVIROMENT TEMPERATURE From -20° up to +60°C
HYDRAULIC TEMPERATURE From -20°C up to +150°C
FILTRATION Permissible degree of fluid contamination NAS to 1638 class 8 or ISO DIS 4406 17/14. Recommended filtration β 25 ≥ 75


2011 © Settima meccanica srl - All rights reserved