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Motor-driven Metering Pump Sigma/ 3 (Basic Type)

Capacity range 45.9 – 264.1 gph (174 - 1,000 l/h), 174 - 58 psi (12 - 4 bar)

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. 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.

Product description

The robust pump for safe and reliable use

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 4.49 - 272.1 gph (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.

Features and 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 overload
  • Reliable operation ensured by bleed option during the suction process

 

Flexible adaptation to the process:

  • 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
  • Customised designs are available on request
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    Changing Liquid Ends

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    Turndown Ratio

Field of application

The following list is a general representation of basically suitable applications for this product. Please contact your personal representative to discuss the use of the product in your individual application.

  • 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

    Technical Details

    • Stroke length: 6 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 (as option with diaphragm rupture warning system via a contact)
    • Integrated hydraulic relief and bleed valve
    • A wide range of power end versions are available: Three-phase standard AC 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)
    • 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

    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

    S3Ba

    gph | l/h

    psi

    ml/stroke

    Strokes/min

    ft | m WC

    psi

    inches

    lb | kg

    * Only available for 50 Hz.

    ** DN32 plate valves with valve spring

    120145 PVT

    45.9 | 174

    145

    33.7

    86

    16 | 5

    29

    1 MNPT

    48.5 | 22

    120145 SST

    45.9 | 174

    174

    33.7

    86

    16 | 5

    29

    1 MNPT

    57.3 | 26

    120190 PVT

    66.3 | 251

    145

    33.7

    124

    16 | 5

    29

    1 MNPT

    48.5 | 22

    120190 SST

    66.3 | 251

    174

    33.7

    124

    16 | 5

    29

    1 MNPT

    57.3 | 26

    120270 PVT

    92.7 | 351

    145

    33.8

    173

    16 | 5

    29

    1 MNPT

    48.5 | 22

    120270 SST

    92.7 | 351

    174

    33.8

    173

    16 | 5

    29

    1 MNPT

    57.3 | 26

    120330 PVT *

    -

    -

    33.8

    -

    16 | 5

    29

    1 MNPT

    48.5 | 22

    120330 SST *

    -

    -

    33.8

    -

    16 | 5

    29

    1 MNPT

    57.3 | 26

    070410 PVT

    129.9 | 492

    102

    95.1

    86

    13 | 4

    15

    1-1/2 MNPT **

    52.9 | 24

    070410 SST

    129.9 | 492

    102

    95.1

    86

    13 | 4

    15

    1-1/2 MNPT **

    63.9 | 29

    070580 PVT

    183.8 | 696

    102

    95.1

    124

    13 | 4

    15

    1-1/2 MNPT **

    52.9 | 24

    070580 SST

    183.8 | 696

    102

    95.1

    124

    13 | 4

    15

    1-1/2 MNPT **

    63.9 | 29

    040830 PVT

    264.1 | 1,000

    58

    95.1

    173

    10 | 3

    15

    1-1/2 MNPT **

    52.9 | 24

    040830 SST

    264.1 | 1,000

    58

    95.1

    173

    10 | 3

    15

    1-1/2 MNPT **

    63.9 | 29

    041030 PVT *

    -

    -

    95.1

    -

    10 | 3

    15

    1-1/2 MNPT **

    52.9 | 24

    041030 SST *

    -

    -

    95.1

    -

    10 | 3

    15

    1-1/2 MNPT **

    63.9 | 29

    Performance data for TTT, see type PVT

    Materials in Contact with the Medium

    DN 25 ball valves

    DN 32 plate valves

    Identity code of material

    Seals

    Suction / discharge connection on dosing head DN 25

    Valve balls

    Valve seats

    Suction / discharge connection on dosing head DN 32

    Valve plates/valve springs

    Valve seats

    Integral relief valve

    * With design “F”, the ball seat is made of PVDF, only for DN 25 ball valves

    ** The valve spring is coated with CTFE (resistance similar to PTFE)

    *** Specifically for areas at risk from explosion

    **** DN 25 and DN 32 designed as ball non-return valve

    PVT

    PTFE

    PVDF

    Glass

    PTFE *

    PVDF

    Ceramic/Hastelloy C + CTFE **

    PTFE

    PVDF/FKM or EPDM

    SST

    PTFE

    Stainless steel 1.4581

    Stainless steel 1.4404

    PTFE *

    Stainless steel 1.4581

    Stainless steel 1.4404/Hastelloy C

    PTFE

    Stainless steel/FKM or EPDM

    TTT ***

    PTFE

    PTFE + 25% carbon

    Ceramic

    PTFE *

    PVDF

    Ceramic/Hastelloy C + CTFE **

    PTFE

    -

    PVF

    PTFE

    PVDF

    Glass

    PVDF

    -

    -

    -

    -

    SSF

    PTFE

    Stainless steel 1.4581/1.4404

    Stainless steel 1.4404

    PVDF

    -

    -

    -

    -

    SSG

    PTFE

    Stainless steel 1.4581/1.4404

    Stainless steel 1.4404

    Stainless steel 1.4404

    -

    -

    -

    -

    SSH ****

    EPDM or FKM

    Stainless steel 1.4435

    Ceramic

    Stainless steel 1.4404

    Stainless steel 1.4581

    Ceramic/E-CTFE

    Stainless steel 1.4404

    -

    Motor Data

    Identity code specificationPower supplyΔ/Y   
    M1-phase AC230 V50/60 Hz  
    N1-phase AC115 V60 Hz  
    S3-phase230 V/400 V50/60 Hz  

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

    In accordance with the Eco Design Directive 2009/125/EC, motors of less than 0.75 kW and motors designed for operation with variable speed are not subject to the IE3 standard.

    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.

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    Overview

    The robust pump for safe and reliable use

    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 4.49 - 272.1 gph (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.

    Features and 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 overload
    • Reliable operation ensured by bleed option during the suction process

     

    Flexible adaptation to the process:

    • 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
    • Customised designs are available on request

    Video

    Application

    Technical Data

    Downloads

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    Contact us

    »We are looking forward to your enquiry.«

    +1 412-787-2484 

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