For flexible metering with excellent process reliability in the medium pressure range.
The Hydro/ 4 hydraulic diaphragm metering pump (HP4a) together with the Hydro/ 2 and Hydro/ 3 pumps represent an integrated product range with stroke lengths of 15 and/or 20 mm. This covers the capacity range from 3 to 1,450 l/h at 100 – 7 bar. A wide range of drive versions is available, including some for use in Exe and Exde areas with ATEX certification. The Hydro product range is designed to comply with API 675 among others.
Your benefits
Excellent process safety and reliability:
- PTFE multi-layer diaphragm with integral diaphragm rupture warning system
- Integral hydraulic relief valve
- Metering reproducibility is better than ± 1% in the 20-100% stroke volume range under defined conditions and with proper 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 5 metering units, even with different pump capacities, in multiple pump systems
- 5 different gear ratios are available
Technical Details
- Stroke length: 20 mm, Rod force: 5,800 N
- Stroke volume adjustment range: 0 – 100%
- Stroke volume adjustment: manually by scaled rotary dial (optionally with electric actuator or control drive).
- Metering reproducibility is better than ± 1% in the 20 – 100% stroke volume range under defined conditions and with correct installation
- PTFE multi-layer diaphragm with electrical diaphragm rupture warning system via a contact
- Integrated hydraulic relief and bleed valve
- Wetted materials: PVDF, PTFE+25% carbon, stainless steel 1.4571, Hastelloy C.
- A wide range of power end versions is available: three-phase standard or 1-phase AC motor, motors for use in Exe and Exde areas, different flange designs for use in customer-specific motors
- Degree of protection: IP 55
- Design in compliance with API 675 among others
| Type HP4a | With 1500 rpm motor at 50 Hz | With 1800 rpm motor at 60 Hz | Suction lift | Perm. pre-pressure suction side | Connection suction/discharge side | Shipping weight | Plunger Ø |
|---|
| | Delivery rate at max. back pressure | Max. stroke rate | Delivery rate at max. back pressure | Max. stroke rate | | | | | |
|---|
| bar | l/h | ml/stroke | Strokes/min | psi | l/h/gph (US) | Strokes/min | m WC | bar | G–DN | kg | mm |
|---|
| 250130 | 25 | 130 | 42.5 | 71 | 363 | 155/41 | 86 | 3 | 1 | G 1 1/2–25 | 69 | 52 |
| 250190 | 25 | 190 | 42.5 | 103 | 363 | 230/61 | 124 | 3 | 1 | G 1 1/2–25 | 69 | 52 |
| 250250 | 25 | 250 | 42.5 | 136 | 363 | 300/79 | 164 | 3 | 1 | G 1 1/2–25 | 69 | 52 |
| 250350 | 25 | 350 | 42.5 | 188 | 363 | 420/111 | 225 | 3 | 1 | G 1 1/2–25 | 69 | 52 |
| 250400 | 25 | 400 | 42.5 | 214 | – | | – | 3 | 1 | G 1 1/2–25 | 69 | 52 |
| 160210 | 16 | 210 | 62.3 | 71 | 232 | 250/66 | 86 | 3 | 1 | G 1 1/2–25 | 76 | 63 |
| 160300 | 16 | 300 | 62.3 | 103 | 232 | 360/95 | 124 | 3 | 1 | G 1 1/2–25 | 76 | 63 |
| 160400 | 16 | 400 | 62.3 | 136 | 232 | 480/127 | 164 | 3 | 1 | G 1 1/2–25 | 76 | 63 |
| 160550 | 16 | 550 | 62.3 | 188 | 232 | 660/174 | 225 | 3 | 1 | G 1 1/2–25 | 76 | 63 |
| 160625 | 16 | 625 | 62.3 | 214 | – | | – | 3 | 1 | G 1 1/2–25 | 76 | 63 |
| 100330 | 10 | 330 | 100.5 | 71 | 145 | 400/106 | 86 | 3 | 1 | G 2–32 | 87 | 80 |
| 100480 | 10 | 480 | 100.5 | 103 | 145 | 580/153 | 124 | 3 | 1 | G 2–32 | 87 | 80 |
| 100635 | 10 | 635 | 100.5 | 136 | 145 | 760/201 | 164 | 3 | 1 | G 2–32 | 87 | 80 |
| 100880 | 10 | 880 | 100.5 | 188 | 145 | 1,050/277 | 225 | 3 | 1 | G 2–32 | 87 | 80 |
| 101000 | 10 | 1,000 | 100.5 | 214 | – | | – | 3 | 1 | G 2–32 | 87 | 80 |
| 070465 | 7 | 465 | 138.8 | 71 | 102 | 560/148 | 86 | 3 | 1 | G 2 1/4–40 | 96 | 94 |
| 070670 | 7 | 670 | 138.8 | 103 | 102 | 805/213 | 124 | 3 | 1 | G 2 1/4–40 | 96 | 94 |
| 070890 | 7 | 890 | 138.8 | 136 | 102 | 1,070/283 | 164 | 3 | 1 | G 2 1/4–40 | 96 | 94 |
| 071230 | 7 | 1,230 | 138.8 | 188 | 102 | 1,450/383 | 225 | 3 | 1 | G 2 1/4–40 | 96 | 94 |
| 071400 | 7 | 1,400 | 138.8 | 214 | – | | – | 3 | 1 | G 2 1/4–40 | 96 | 94 |
Materials in Contact With the Medium
| | | | DN 25 ball valves | DN 32/DN 40 plate valves |
|---|
| Material | Dosing head | Suction/pressure connector | Seals | Valve balls | Valve seats | Seals | Valve plates/valve springs | Valve seats |
|---|
| SST | Stainless steel 1.4404 | Stainless steel 1.4404 | PTFE | Stainless steel 1.4404 | PTFE | PTFE | Stainless steel 1.4404/ Hast. C | PTFE |
| PVT* | PVDF (polyvinylidene fluoride) | PVDF (polyvinylidene fluoride) | PTFE | Glass | PTFE | PTFE | Ceramic/E-CTFE | PTFE |
| HCT | Hastelloy C | Hastelloy C | PTFE | Hastelloy C | PTFE | PTFE | Hast. C / E-CTFE | PTFE |
| TTT | PTFE + 25 % carbon | PVDF (polyvinylidene fluoride) | PTFE | Glass | PTFE | PTFE | Ceramic/E-CTFE | PTFE |
* not for areas at risk from explosion
Motor Data
| Identity code specification | | Power supply | | | Remarks |
|---|
| S | 3 ph, IP 55 | 220-240 V/380-420 V
250-280 V/440-480 V | 50 Hz
60 Hz | 1.1 kW | |
| T | 3 ph, IP 55 | 220-240 V/380-420 V
265-280 V/440-480 V | 50 Hz
60 Hz | 1.1 kW | With PTC, speed control range 1:5 |
| R | 3 ph, IP 55 | 230 V/400 V | 50/60 Hz | 1.5 kW | With PTC, speed control range 1:20, with external fan 1 ph 230 V; 50/60 Hz |
| V0 | 3 ph, IP 55 | 400 V | 50/60 Hz | 1.5 kW | Variable speed motor with integrated frequency converter |
| L1 | 3 ph, II2GEExellT3 | 220-240 V/380-420 V | 50 Hz | 1.1 kW | |
| L2 | 3 ph, II2GEExdllCT4 | 220-240 V/380-420 V | 50 Hz | 1.1 kW | With PTC, speed control range 1:5 |
| P1 | 3 ph, II2GEExellT3 | 254-277 V/440-480 V | 60 Hz | 1.1 kW | |
| P2 | 3 ph, II2GEExdllCT4 | 254-277 V/440-480 V | 60 Hz | 1.1 kW | With PTC, speed control range 1:5 |
| V2 | 3 ph, II2GEExdllCT4 | 400 V ±10% | 50/60 Hz | 1.5 kW | Ex-variable speed motor with integrated frequency converter |
Motor data sheets can be requested for more information. Motors for Sigma basic pumps, 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/EU in premises at risk from explosion. Ensure that the explosion group, category and degree of protection specified on the label corresponds to or is better than the conditions prevalent in the intended field of application.
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