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Motor-Driven Metering Pump Sigma/ 2 (Basic Type)

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  • Motor-Driven Metering Pump Sigma/ 2 (Basic Type)

Capacity range 50 – 420 l/h, 16 – 4 bar

Robust motor-driven metering pumps like the Sigma/ 2 Basic guarantee excellent process reliability with their patented multi-layer safety diaphragm. The diaphragm metering pump offers a number of power end versions, also suitable for use in areas at risk from explosion.

The Robust Pump for Safe and Reliable Use.

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.

Your benefits

Excellent process reliability:

  • In the event of an accident, the feed chemical does not escape to the outside nor into the pump’s power end, thanks to the patented multi-layer safety diaphragm with optical (optionally electric) signalling
  • Integrated relief valve protects the pump against overloading
  • Reliable operation by bleed option during the suction process

Flexible adaptation to the process:

  • The Sigma product range is available as standard in the ‘Physiologically safe in respect of wetted materials’ ‘F’ design.
  • Metering pumps with electro-polished stainless steel metering head enable them to be used in hygienically challenging applications
  • Wide range of power end versions, also for use in areas at risk from explosion, and different flange designs for the use of customised motors

Technical Details

  • Stroke length: 5 mm,
  • Stroke length adjustment range: 0 – 100%
  • Stroke length adjustment: manually using self-locking rotary dial in 1% increments (optionally with actuator or control drive)
  • With the right, constant conditions, correct installation and calibration, precision exceeds ±1 %, based on maximum stroke volume.
  • Wetted materials: PVDF, stainless steel 1.4571/1.4404, special materials on request
  • Patented multi-layer safety diaphragm with optical diaphragm rupture display (an option with diaphragm rupture warning system via a contact)
  • Integrated hydraulic relief and bleed valve
  • A wide range of power end versions is available: Three-phase standard AC motor, 1-phase AC motor, motors for use in areas at risk from explosion and different flange designs for use in customer-specific motors
  • For areas at risk from explosion II 2G Ex h IIC T3 Gb X or II 2G Ex h IIC T4 Gb X (optional)
  • IP 55 degree of protection
  • High-strength fibreglass-reinforced plastic housing with excellent chemical resistance
  • For reasons of safety, provide suitable overflow devices during installation for all mechanically deflected diaphragm metering pumps.

Technical Data

Type Capacity at max. back pressure with 1500 rpm motor at 50 Hz Pump capacity at max. back pressure with 1800 rpm motor at 60 Hz Suction lift Perm. pre-pressure suction side Connector Suction/Discharge Side Shipping weight
Max. stroke rate Max. stroke rate
S2Ba l/h bar ml/stroke Strokes/min l/h / gph (US) psi Strokes/min m WC bar G-DN kg
* For the Sigma types 07120, 07220 and 04350, the dosing head is fitted with DN 25 (G 1 1/2) valves. As DN 20 is generally sufficient for the pipework for these types (see technical data, suction/discharge side connector), the connector parts that can be ordered with the identity code (e.g. inserts) are already reduced to DN 20, i.e. DN 20 pipework and accessories can be installed.
16050 PVT 50 10 11.4 73 60.0/15.8 145 87 7 3 1–15 15
16050 SST 47 16 11.4 73 56.0/14.7 232 87 7 3 1–15 20
16090 PVT 88 10 11.4 132 106.0/28.0 145 158 7 3 1–15 15
16090 SST 82 16 11.4 132 98.4/25.9 232 158 7 3 1–15 20
16130 PVT 135 10 10.9 198 162.0/42.8 145 238 7 3 1–15 15
16130 SST 124 16 10.9 198 148.0/39.0 232 238 7 3 1–15 20
07120 PVT * 126 7 27.4 73 150.0/39.6 102 87 5 1 1 1/2–25 16
07120 SST * 126 7 27.4 73 150.0/39.6 102 87 5 1 1 1/2–25 24
07220 PVT * 220 7 27.7 132 264.0/69.7 102 158 5 1 1 1/2–25 16
07220 SST * 220 7 27.7 132 264.0/69.7 102 158 5 1 1 1/2–25 24
04350 PVT * 350 4 29.4 198 420.0/110.9 58 238 5 1 1 1/2–25 16
04350 SST * 350 4 29.4 198 420.0/110.9 58 238 5 1 1 1/2–25 24

Performance data for TTT, see type PVT

Integrated relief valve, connector for DN 10 pressure hose sleeve

Materials in Contact with the Medium

Identity code of material Dosing head Connection on suction/discharge side Seals/ball seat Balls Integral relief valve
* With 07120, 07220, 04350
** Specifically for areas at risk from explosion
PVT PVDF PVDF PTFE/PTFE Ceramic/glass * PVDF/FKM or EPDM
SST Stainless steel 1.4404 Stainless steel 1.4581 PTFE/PTFE Stainless steel 1.4404 Stainless steel/FKM or EPDM
TTT ** PTFE + 25% carbon Carbon-filled PTFE PTFE/PTFE Ceramic/glass * –
PVF PVDF PVDF PTFE/PTFE Ceramic/glass * PVDF/FKM or EPDM
SSF Stainless steel 1.4404 Stainless steel 1.4581 PTFE/PTFE Stainless steel 1.4404 Stainless steel/FKM or EPDM
SSG Stainless steel 1.4404 Stainless steel 1.4581 PTFE/stainless steel 1.4404 Stainless steel 1.4404 –
SSH Stainless steel 1.4435 Stainless steel 1.4435 EPDM or FKM/stainless steel 1.4435 Ceramic –

Motor Data

Identity code specification Power supply Δ/Y Remarks
S 3-phase, IP 55* 230 V/400 V 50 Hz 0.25 kW
T 3-phase, IP 55* 230 V/400 V 50 Hz 0.25 kW With PTC, speed control range 1:4
265 V/460 V 60 Hz 0.25 kW
R 3-phase, IP 55* 230 V/400 V 50 Hz 0.37 kW With PTC, speed control range 1:20 with external fan (1-phase 230 V; 50/60 Hz, 134 W)
M 1-phase AC, IP 55 230 V ± 5 % 50 Hz 0.18 kW
N 1-phase AC, IP 55 120 V ± 5 % 60 Hz 0.18 kW
L1 3-phase, II2GExellT3 220 – 240 V/380 – 420 V 50 Hz 0.18 kW
L2 3-phase, II2GExdllCT4 220 – 240 V/380 – 420 V 50 Hz 0.18 kW With PTC, speed control range 1:5

Motor data sheets can be requested for more information. Versions 265/460V – 60Hz, special motors or special motor flanges are available on request.

Motors less than 0.75 kW and motors designed for speed-controllable operation are not subject to the IE3 standard in compliance with the Ecodesign Directive 2009/125/EC.

Information for use in areas at risk from explosion

Only use pumps with the appropriate labelling in line with the ATEX Directive 2014/34/EC in premises at risk from explosion. Ensure that the explosion group, category and degree of protection specified on the label correspond to or are superior to the conditions prevalent in the intended application.

Motor-Driven Metering Pump Sigma/ 2 (Basic Type) Kataloğu