For flexible metering with excellent process reliability in the medium pressure range.
The HYDRO API 675 hydraulic diaphragm metering pumps form an integrated product range with stroke lengths of 15 or 20 mm. Equipped with full-motion drive and automatic bleeding, they therefore cover the capacity range of 7 to 1506 l/h at 100 – 7 bar. They also meet the requirements of API 675.
Your benefits
Excellent process reliability:
- PTFE multi-layer diaphragm with integrated diaphragm monitoring with condition signals sent via contact
- Integrated hydraulic relief valve with ventilation function
- The dosing precision is better than ± 1 % within the 10-100 % 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
Technical Details
- Stroke length: 15 mm (HA1a, HA2a, HA3a), 20 mm (HA4a)
- Rod force: 2000 N (HA1a, HA2a), 4200 N (HA3a), 5800 N (HA4a)
- Stroke volume adjustment range: 0 – 100%
- Stroke volume adjustment: manually using scaled rotary dial (with electric actuator or control drive as an option).
- The dosing precision is better than ± 1 % within the 10 – 100 % stroke volume range under defined conditions and with correct installation
- PTFE multi-layer diaphragm with electrical diaphragm monitoring with condition signals sent via contact
- Integrated hydraulic relief and vent valve
- Full-motion drive
- 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 standard three-phase motors or motors for use in areas at risk from explosion, different flange designs for use of customer-specific motors
- Degree of protection: IP 55
- Design in compliance with API 675
Hydraulic Diaphragm Metering Pump HYDRO HA1a
Technical data for HYDRO HA1a (50 Hz)
Technical data for HYDRO HA1a (60 Hz)
Piston Ø 9 and 12, version with double ball valves.
The permitted rated flow configuration is possible in the stated range when pumps are selected in accordance with API 675 (control range 1:10).
The litre capacity indicated using [...] is the maximum litre capacity with an applicable control range of 1:5 and does not therefore satisfy API 675.
Example: a 12 mm piston, 40 bar pressure and stroke rate of 125 strokes/min results in (4.5) - 8.7, i.e. the control range of 1:10 is met for a rated flow of between 4.5 l/h and 8.7 l/h.
Wetted materials for HYDRO HA1a
Motor data for HYDRO HA1a
| 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 | 0.37 kW | With PTC, speed control range 1:20, with external fan 1-phase 230 V; 50/60 Hz |
| V | 1-phase, IP 55* | 230 V | 50 Hz | 0.37 kW | Variable speed stroke control motor with integrated frequency converter |
| L | 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 |
| Q | 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 HA2a
Technical data for HYDRO HA2a 50 Hz
Technical data for HYDRO HA2a 60 Hz
The permitted rated flow configuration is possible in the stated range when pumps are selected in accordance with API 675 (control range 1:10).
The litre capacity indicated using [...] is the maximum litre capacity with an applicable control range of 1:5 and does not therefore satisfy API 675.
Example: with 16 mm piston, pressure 25 bar and stroke rate of 150 strokes/min gives (14) - 17.5, i.e. the control range of 1:10 is met for a rated flow of between 14 l/h and 17.5 l/h.
PVDF version max. 25 bar, PTFE + 25 % carbon; PTFE up to 16 bar
Wetted materials for HYDRO HA2a
Motor data for HYDRO HA2a
| 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 |
| V | 1-phase, IP 55* | 230 V | 50 Hz | 0.37 kW | Variable speed stroke control motor with integrated frequency converter |
| L | 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 |
| Q | 3-phase, II 2G Ex de IIC T4 | 265 V/460 V | 60 Hz | 0.37 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 HA3a
Technical data for HYDRO HA3a 50 Hz
Technical data for HYDRO HA3a 60 Hz
The permitted rated flow configuration is possible in the stated range when pumps are selected in accordance with API 675 (control range 1:10).
The litre capacity indicated using [...] is the maximum litre capacity with an applicable control range of 1:5 and does not therefore satisfy API 675.
Example: a 26 mm piston, 25 bar pressure and stroke rate of 150 strokes/min results in (40) - 59, i.e. the control range of 1:10 is met for a rated flow of between 40 l/h and 59 l/h.
PVDF version max. 25 bar, PTFE + 25 % carbon; PTFE up to 16 bar
Wetted materials for HYDRO HA3a
Motor data for HYDRO HA3a
| 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 |
| V | 1-phase, IP 55* | 230 V | 50 Hz | 0.75 kW | Variable speed stroke control motor with integrated frequency converter |
| L | 3-phase, II 2G Ex de IIC T4 | 230 V/400 V | 50 Hz | 0.75 kW | With PTC, speed control range 1:5 |
| Q | 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 HA4a
Technical data for HYDRO HA4a 50 Hz
Technical data for HYDRO HA4a 60 Hz
The permitted rated flow configuration is possible in the stated range when pumps are selected in accordance with API 675 (control range 1:10).
The litre capacity indicated using [...] is the maximum litre capacity with an applicable control range of 1:5 and does not therefore satisfy API 675.
Example: with 52 mm piston, 10 bar pressure and stroke rate of 136 strokes/min results in (200) - 276, i.e. the control range of 1:10 is met for a rated flow of between 200 l/h and 276 l/h.
PVDF version max. 25 bar, PTFE + 25 % carbon; PTFE up to 10 bar
Wetted materials for HYDRO HA4a
Motor data for HYDRO HA4a
| 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 |
| V | 3-phase, IP 55* | 400 V | 50 Hz | 1.5 kW | Variable speed stroke control motor with integrated frequency converter |
| L | 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 |
| Q | 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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