It is not possible to do more with a mechanically deflected diaphragm
The diaphragm metering pump Makro/ 5 (M5Ma) with the Makro/ 5 hydraulic diaphragm and plunger metering pumps, form a range of drive mechanisms with stroke lengths of 20 and/or 50 mm. A wide range of power end versions is available for use in areas at risk from explosion with ATEX certification.
Your benefits
Process reliability:
- Metering reproducibility is better than ± 2% within the 30-100% stroke length range under defined conditions and with correct installation.
Excellent flexibility:
- The modular construction with single and double head versions permits a wide range of applications, with the double head designs being operated in push-pull mode
- It is possible to combine up to 4 metering units, even with different pump capacities, in multiple pump systems
- 5 different gear ratios are available
- Customised designs are available on request
Technical Details
- Stroke length: 0-20 mm, Rod force: 10,000 N
- Stroke length adjustment range: 0 – 100%
- Stroke length adjustment: manually by means of a manual adjustment wheel and scaled display in 0.5% increments (optionally with electric actuator or control drive)
- Metering reproducibility is better than ± 2% within the 30 – 100% stroke length range under defined conditions and with correct installation. Observe the information in the operating instructions
- Wetted materials: Polypropylene, PVC, PTFE+25% carbon, stainless steel 1.4571, special materials are available on request
- A wide range of power end versions is available: Three-phase standard motors, motors for use in areas at risk from explosion and different flange designs for use in customer-specific motors
- Degree of protection: IP 55
- Salt water-resistant, acrylic resin-coated cast iron housing
- For reasons of safety, provide suitable overload protection mechanisms during the installation of all mechanically deflected diaphragm metering pumps
Technical Data
Typ | Capacity at max. back pressure with 1500 rpm motor at 50 Hz | Capacity at max. back pressure with 1800 rpm motor at 60 Hz | Suction lift | Connector Suction/Discharge Side | Shipping weight |
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| Max. stroke rate |
| Max. stroke rate |
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| l/h | bar | ml/stroke | Strokes/min | l/h | psi | gph (US) | Strokes/min | m WC | G-DN | kg |
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041540 | 1,540 | 4 | 427 | 60 | 1,822 | 58 | 481 | 71 | 3.0 | 2 3/4–50 | 320 |
041900 | 1,900 | 4 | 427 | 75 | 2,254 | 58 | 595 | 89 | 3.0 | 2 3/4–50 | 320 |
042600 | 2,600 | 4 | 427 | 103 | 3,104 | 58 | 820 | 123 | 3.0 | 2 3/4–50 | 320 |
043400 | 3,400 | 4 | 427 | 133 | 4,064 | 58 | 1,074 | 159 | 3.0 | 2 3/4–50 | 320 |
044000 | 4,000 | 4 | 427 | 156 | - | 58 | - | - | 3.0 | 2 3/4–50 | 320 |
Stainless steel version: Shipping weight 340 kg
The permissible admission pressure on the intake side is approx. 50% of the maximum permissible back pressure.
Materials in Contact With the Medium
Identity code of material | Dosing head | Suction/discharge valve | Seals DN 50 | Valve plates/valve springs | Valve seats |
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* The valve spring is coated with CTFE (resistance similar to PTFE) |
PCT | PVC | PVC | PTFE | Ceramic/Hastelloy C + CTFE * | PTFE |
PPT | Polypropylene | Polypropylene | PTFE | Ceramic/Hastelloy C + CTFE * | PTFE |
SST | Stainless steel 1.4571/1.4404 | Stainless steel 1.4571/1.4404 | PTFE | Stainless steel 1.4404/Hastelloy C | PTFE |
TTT | Carbon-filled PTFE | Carbon-filled PTFE | PTFE | Ceramic/Hastelloy C + CTFE * | PTFE |
DEVELOPAN® metering diaphragm with PTFE coating.
Special designs available on request.
Motor Data
| Identity code specification | | Power supply | | | Remarks |
| S | 3-phase, IP 55 | 220 - 240 V/380 - 420 V 265 – 280 V/440 – 480 V | 50 Hz 60 Hz | 3 kW | |
| R | 3-phase, IP 55 | 230 V/400 V | 50 Hz | 3 kW | with PTC, speed adjustment range 1:5 with external fan (1-phase 230 V; 50/ 60 Hz; 20 W) |
| L1 | 3-phase, II2GEXellT3X | 220 – 240 V/380 – 420 V | 50 Hz | 3.6 kW | |
| L2 | 3-phase, II2GExdeIICT4Gb | 220 – 240 V/380 – 420 V | 50 Hz | 4 kW | with PTC, speed control range 1:5 |
| P1 | 3-phase, II2GExeIICT3 | 250 – 280 V/440 – 480 V | 60 Hz | 3.6 kW | |
| P2 | 3-phase, II2GExdeIICT4 | 250 – 280 V/440 – 480 V | 60 Hz | 4 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.
The motors are designed 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.
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