For flexible metering with excellent process reliability in the medium pressure range.
The hydraulic diaphragm metering pump HYDRO with its HP2a, HP3a and HP4a product ranges forms an integrated product range with stroke lengths of 15 or 20 mm. This covers the capacity range from 3 to 1450 l/h at 100 – 7 bar. A wide range of power end versions is available, including some for use in areas at risk from explosion with ATEX certification.
Your benefits
Excellent process reliability:
- PTFE multi-layer diaphragm with integral diaphragm rupture warning / signalling system
- Integral hydraulic relief valve
- The dosing precision is better than ± 1 % within the 20-100 % stroke volume 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 (boxer principle) being operated in push-pull mode
- It is possible to combine up to 5 metering units, even with different pump capacities, in multiple pump systems
- 5 different gear ratios are available
Field of application
The following list of applications are general examples of generally suitable applications for this product. Please contact your local sales representative to talk about the applicable use of this product in your specific case / environment.
- Oil and gas industry
- Volume-proportional metering of chemicals/additives in the treatment of boiler feed water
- Metering of reactants and catalysts in the chemical industry
- Level-dependent metering of auxiliary agents in industrial production engineering, for instance hot wax metering in the production of adhesive strips
Technical Details
- Stroke length: 15 mm (HP2a, HP3a), 20 mm (HP4a)
- Rod force: 2000 N (HP2a), 4200 N (HP3a), 5800 N (HP4a)
- Stroke volume adjustment range: 0 – 100%
- Stroke volume adjustment: manually using scaled rotary dial (optionally with electric actuator or control drive)
- The dosing precision is better than ± 1 % within the 20 to 100% stroke volume range under defined conditions and with correct installation
- PTFE multi-layer diaphragm with electrical diaphragm rupture warning / signalling system via a contact
- Integrated hydraulic relief and vent valve
- Wetted materials: PVDF, PTFE+25% carbon, stainless steel 1.4571, Hastelloy C.
- A wide range of power end/drive versions is available: Three-phase or 1-phase AC motor, motors for use in areas at risk from explosion, different flange designs for use of customer-specific motors
- Degree of protection: IP 55
Hydraulic Diaphragm Metering Pump HYDRO HP2a
Technical data for HYDRO HP2a
PVDF version max. 25 bar, PTFE + 25 % carbon; PTFE max.16 bar
Wetted materials for HYDRO HP2a
Motor data for HYDRO HP2a
| Identity code specification | | Power supply | | | Remarks |
| S | 3-phase, IP 55* | 230 V/400 V | 50 Hz | 0.37 kW | |
| T | 3-phase, IP 55* | 230 V/400 V
265 V/460 V | 50 Hz
60 Hz | 0.37 kW
| With PTC, speed control range 1:5 |
| R | 3-phase, IP 55* | 230 V/400 V | 50 Hz | 0.45 kW | With PTC, speed control range 1:20, with external fan 1-phase 230 V; 50/60 Hz |
| V0 | 1-phase, IP 55* | 230 V | 50 Hz | 0.37 kW | Variable speed stroke control motor with integrated frequency converter |
| L2 | 3-phase, II 2G Ex de IIC T4 Gb | 230 V/400 V | 50 Hz | 0.37 kW | With PTC, speed control range 1:5 |
| P2 | 3-phase, II 2G Ex de IIC T4 | 265 V/460 V | 60 Hz | 0.37 kW | With PTC, speed control range 1:5 |
* Three-phase motor according to IEC 60034-1
Motor data sheets can be requested for more information. Versions 265/460V - 60Hz, special motors or special motor flanges are available on request.
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.
Hydraulic Diaphragm Metering Pump HYDRO HP3a
Technical data for HYDRO HP3a
PVDF version max. 25 bar, PTFE + 25 % carbon; PTFE max.16 bar
SST version with double ball valve, valve connector on the suction/discharge side with female thread Rp 3/8, male thread G 3/4-DN 10
Wetted materials for HYDRO HP3a
Motor data for HYDRO HP3a
| Identity code specification | | Power supply | | | Remarks |
| S | 3-phase, IP 55* | 230 V/400 V | 50 Hz | 0.75 kW | |
| T | 3-phase, IP 55* | 230 V/400 V
265 V/460 V | 50 Hz
60 Hz | 0.75 kW
| With PTC, speed control range 1:5 |
| R | 3-phase, IP 55* | 230 V/400 V | 50 Hz | 0.75 kW | With PTC, speed control range 1:20, with external fan 1-phase 230 V; 50/60 Hz |
| V0 | 1-phase, IP 55* | 230 V | 50 Hz | 0.75 kW | Variable speed stroke control motor with integrated frequency converter |
| L2 | 3-phase, II 2G Ex de IIC T4 | 230 V/400 V | 50 Hz | 0.75 kW | With PTC, speed control range 1:5 |
| P2 | 3-phase, II 2G Ex de IIC T4 | 265 V/460 V | 60 Hz | 0.75 kW | With PTC, speed control range 1:5 |
* 3-phase AC motor in accordance with IEC 60034-1
Motor data sheets can be requested for more information. 265/460V - 60Hz versions, special motors or special motor flanges are available on request.
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.
Hydraulic Diaphragm Metering Pump HYDRO HP4a
Technical data for HYDRO HP4a
PVDF version max. 25 bar, PTFE + 25 % carbon; PTFE max.10 bar
Wetted materials for HYDRO HP4a
Motor data for HYDRO HP4a
| Identity code specification | | Power supply | | | Remarks |
| S | 3-phase, IP 55* | 230 V/400 V | 50 Hz | 1.1 kW | |
| T | 3-phase, IP 55* | 230 V/400 V
265 V/460 V | 50 Hz
60 Hz | 1.1 kW
| With PTC, speed control range 1:5 |
| R | 3-phase, IP 55* | 230 V/400 V | 50 Hz | 1.5 kW | With PTC, speed control range 1:20, with external fan 1-phase 230 V; 50/60 Hz |
| V0 | 3-phase, IP 55* | 400 V | 50 Hz | 1.5 kW | Variable speed stroke control motor with integrated frequency converter |
| L2 | 3-phase, II 2G Ex de IIC T4 Gb | 230 V/400 V | 50 Hz | 1.1 kW | With PTC, speed control range 1:5 |
| P2 | 3-phase, II 2G Ex de IIC T4 | 265 V/460 V | 60 Hz | 1.1 kW | With PTC, speed control range 1:5 |
* 3-phase AC motor in accordance with IEC 60034-1
Motor data sheets can be requested for more information. 265/460V - 60Hz versions, special motors or special motor flanges are available on request.
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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