Sigma/ 2 (Basic Type)

The Sigma/ 2 diaphragm metering pump, together with pumps of type Sigma/ 1 and Sigma/ 3, represents an integrated product range. They cover the capacity range from 17 to 1,030 l/h, with a consistent operating concept, control concept and spare parts management. A wide range of power end versions is available, including some for use in ATEX areas.
Contact us to order

Industries Served

  • Metering of highly viscous substances such as polymers
  • Cyanide dosing in gold processing and treatment
  • Wastewater dosing in municipal sewerage treatment plants
  • Water treatment for boiler feed water in power stations
  • Chemical dosing in fertilizer manufacturing plants
  • Post process water treatment in reverse osmosis potable water plants
  • Highly robust metal inner housing for load stressed parts
  • Plastic housing to protect against corrosion
  • Capacity range 50 – 350 litres/hour, 12– 4 bar
  • Dosing accuracy is better than ± 2% in the stroke length range of 30 – 100%
  • Corrosion resistant plastic housing rated IP 65
  • Available in contact or analogue signal

NOTE: Product information should be used as a guide only and should not be used for pump selection. For further information, please contact Malcolm Thompson Pumps on 1800 439 607.

Part number Max pump capacity at max back pressure Max stroke frequency (strokes/ min) Suction lift (mWG) Adm priming pressure suction side Connector suction/ discharge side Power supply Delivery weight (kg)
(bar) (L/hr) (mL/ stroke) (bar) (DN)
S2BaHM16050PVT0010M000 10 50 11.4 73 7 3 15 1″ / 20mm 1 ph. AC, 230 Volt, 50Hz, 0.18kW 15
S2BaHM16090PVT0010M000 10 90 11.4 132 7 3 15 1″ / 20mm 1 ph. AC, 230 Volt, 50Hz, 0.18kW 15
S2BaHM16130PVT0010M000 10 130 10.9 198 7 3 15 1″ / 20 mm 1 ph. AC, 230 Volt, 50Hz, 0.18kW 15
S2BaHM07120PVT0010M000 7 120 27.4 73 5 1 25 1 ½” / 25mm 1 ph. AC, 230 Volt, 50Hz, 0.18kW 16
S2BaHM07220PVT0010M000 7 220 27.7 132 5 1 25 1 ½” / 25mm 1 ph. AC, 230 Volt, 50Hz, 0.18kW 16
S2BaHM04350PVT0010M000 4 350 29.4 198 5 1 25 1 ½” / 25mm 1 ph. AC, 230 Volt, 50Hz, 0.18kW 16

Control

Part number Max pump capacity at max back pressure Max stroke frequency (strokes/ min) Suction lift (mWG) Adm priming pressure suction side Connector suction/ discharge side Power supply Delivery weight (kg)
(bar) (L/hr) (mL/ stroke) (bar) (DN)
S2CaHM16050PVT0010UC01000 10 50 11.4 73 7 3 15 1″ / 20mm 1 ph. 100 – 230 Volt ± 10% 50Hz 15
S2CaHM16090PVT0010UC01000 10 90 11.4 132 7 3 15 1″ / 20mm 1 ph. 100 – 230 Volt ± 10% 50Hz 15
S2CaHM16130PVT0010UC01000 10 130 10.9 198 7 3 15 1″ / 20 mm 1 ph. 100 – 230 Volt ± 10% 50Hz 15
S2CaHM07120PVT0010UC01000 7 120 27.4 73 5 1 25 1-½” / 25mm 1 ph. 100 – 230 Volt ± 10% 50Hz 16
S2CaHM07220PVT0010UC01000 7 220 27.7 132 5 1 25 1 ½” / 25mm 1 ph. 100 – 230 Volt ± 10% 50Hz 16
S2CaHM04350PVT0010UC01000 4 350 29.4 198 5 1 25 1 ½” / 25mm 1 ph. 100 – 230 Volt ± 10% 50Hz 16