Motor-Driven Metering Pumps - Sigma/ 3 ...

Motor-Driven Metering Pumps - Sigma/ 3 (Basic Type)

The patented multi-layer safety diaphragm for excellent process reliability is just one feature of the extremely robust motor-driven metering pump Sigma/3 Basic.

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The Sigma/ 3 diaphragm metering pump together with pumps of type Sigma/ 1 and Sigma/ 2 represent 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 areas at risk from explosion. It also offers a wide range of power end versions, such as three-phase or 1-phase AC motors, also for use in ATEX areas.

Applications for Motor-Driven Metering Pumps - Sigma/ 3 (Basic Type)

Volume-proportional addition of chemicals in water treatment, e.g. sodium-calcium hypochlorite for the disinfection of potable water
Addition of chemicals depending on the measured value, e.g. metering of acid and alkali for pH neutralisation in waste water treatment
Time-controlled addition of chemicals in the cooling water circuit
Pulse-controlled metering in the bottling of different volumes e.g. glycerin filling of manometers

Features

The entire Sigma product range is available as standard in a "Physiologically safe in respect of wetted materials" 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
Highly rigid fibreglass-reinforced plastic housing with excellent chemical resistance

Why Choose This Product

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

Specifications of this product

Capacity range 146 – 1,030 l/h, 12 – 4 bar
Stroke length: 6 mm,
Stroke length adjustment range: 0 – 100%
Stroke length adjustment: manually by self-locking rotary dial in 1 % increments (optionally with actuator or control drive)
Metering reproducibility is better than ± 2% in the 30 – 100 % stroke length adjustment range under defined conditions and with correct installation.
Wetted materials: PVDF, stainless steel 1.4571/1.4404, special materials on request
Patented multi-layer safety diaphragm with optical diaphragm rupture display (optionally 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 motor, 1-phase AC motor, motors for use in Exe and Exde areas 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)
Degree of protection IP 55
For reasons of safety, provide suitable overload protection mechanisms when installing all mechanically deflected diaphragm metering pumps.

To contact ProMinent Australia about Motor-Driven Metering Pumps - Sigma/ 3 (Basic Type) use Get a quote.

Applications for Motor-Driven Metering Pumps - Sigma/ 3 (Basic Type)

Volume-proportional addition of chemicals in water treatment, e.g. sodium-calcium hypochlorite for the disinfection of potable water
Addition of chemicals depending on the measured value, e.g. metering of acid and alkali for pH neutralisation in waste water treatment
Time-controlled addition of chemicals in the cooling water circuit
Pulse-controlled metering in the bottling of different volumes e.g. glycerin filling of manometers

Features

The entire Sigma product range is available as standard in a "Physiologically safe in respect of wetted materials" 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
Highly rigid fibreglass-reinforced plastic housing with excellent chemical resistance

Why Choose This Product

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

Specifications of this product

Capacity range 146 – 1,030 l/h, 12 – 4 bar
Stroke length: 6 mm,
Stroke length adjustment range: 0 – 100%
Stroke length adjustment: manually by self-locking rotary dial in 1 % increments (optionally with actuator or control drive)
Metering reproducibility is better than ± 2% in the 30 – 100 % stroke length adjustment range under defined conditions and with correct installation.
Wetted materials: PVDF, stainless steel 1.4571/1.4404, special materials on request
Patented multi-layer safety diaphragm with optical diaphragm rupture display (optionally 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 motor, 1-phase AC motor, motors for use in Exe and Exde areas 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)
Degree of protection IP 55
For reasons of safety, provide suitable overload protection mechanisms when installing all mechanically deflected diaphragm metering pumps.

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To contact ProMinent Australia about Motor-Driven Metering Pumps - Sigma/ 3 (Basic Type) use Get a quote.

AI Overview BETA

The Sigma/3 Basic is a motor-driven diaphragm metering pump for controlled process chemical dosing. Its patented multi-layer safety diaphragm prevents feed chemical escaping outside or entering the pump’s power end in an accident, with optical rupture indication. Water treatment operators use it to add disinfectant in proportion to water volume in potable water treatment systems.

Integrated hydraulic relief valve protects against pump overload
Capacity: 146–1,030 l/h; pressure: 12–4 bar
6 mm stroke; manual adjustment in 1% increments
Better than ±2% reproducibility at 30–100% adjustment, under defined conditions and correct installation
Power-end options include three-phase, single-phase AC, and motors for Exe/Exde areas

Source: listing by ProMinent Australia on IndustrySearch · Updated 2 Nov 2026

AI Overview is generated by artificial intelligence and may contain mistakes.

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