Diaphragm pumps - Hygienic series
The hygienic diaphragm pump series is mainly designed for use in the food and beverage, pharmaceutical and cosmetic industries. A lubricant-free air mechanism, easy access for checking the valve system and for visual inspection of product contact surfaces are some of the main features of this series.
The design of the pump allows for a total visual inspection and control of all surfaces in contact with the product. the hygienic diaphragm pump has no stagnant areas where bacteria can grow. Terminal connections and threads are easy to unscrew for disassembly and flushing. The pumps are also designed for C. I. P. and S. I. P. cleaning and sterilisation. After these operations, the pump can be easily used to pump out the cleaning solutions from the pipework.
Design features:
- connection of nozzles to enclosures according to the CLAMP standard
- simple and quick assembly and disassembly of the flushing pump
- easy access for checking valves and inspecting product contact surfaces
- air mechanism operating without lubrication (no oil emissions into the environment)
- no stagnant zones
- The pumps are designed for C.I.P. and S.I.P. cleaning, sterilisation and pumping out cleaning solutions from pipelines.
High-quality polishing:
- Polishing of internal and external surfaces, which gives the pump parts a special smoothness and hygienic properties.
- Additional polishing is possible, according to customer requirements.
Various connection options:
- DIN 11851 (standard), Tri-Clamp, SMS etc.
Durable membranes (diaphragms):
- smooth work surface
- no central through hole
- no metal parts in contact with the pumped liquid
- material suitable for the task
| DM 25/75 HTS-DIN-DM1 | |
|---|---|
| DM - DELLMECO pump 25 - Nominal diameter of pump connections 75 - Maximum capacity (at 8 bar in the air line) | DM1 - options: BC1 - Barrier chambers with sensors (NAMUR standard) BC2 - Option BC1 + controller BC3 - Option BC2 in explosion-proof version (ATEX) DM1 - Diaphragm rupture detector (NAMUR - ATEX standard) DM2 - Option DM1 + controller SC1 - Stroke sensor, ATEX SC2 - Option SC1 + cycle counter SC3 - Option SS2 in explosion-proof version, ATEX SC5 - Pneumatic stroke sensor with electro-pneumatic pressure transducer SC6 - Option SC5 + beat counter AF1, AF2 - Filter regulator, fittings BF2 - Backflow system, manually operated, with PTFE O-rings D - Barrel version HJ - Heating/cooling jacket T - Stainless steel trolley version P - Version for transporting bulk materials Ra - Additional polishing of internal and external surfaces to a roughness of 0.5-0.7 μm (only AISI 316L stainless steel) S - Version with double nozzles CLEAN - Assembly in a special dust-free room for special pump applications |
| H - Housing material: H – AISI 316L |
|
| S - valve material and shape: E - EPDM, spherical shape T - Teflon, spherical shape S - AISI 316, spherical shape |
|
| DIN is the standard for pipe connections: DIN - DIN 11850 TC - DIN 32676 Tri-Clamp SMS - SMS |
|
| MEMBRANES (DIAPHRAGMS) | OPERATING TEMPERATURE MIN MAX | PARTS IN CONTACT WITH THE PRODUCT |
|---|---|---|
| EPDM: Ethylene propylene diene rubber. Very good chemical resistance. Not suitable for oils and solvents. Resistant to ketones and alcohols. | -40°C +120°C | PE (polyethylene) is very strong and extremely resistant to abrasion. The moisture absorption capacity is very low. Good chemical resistance to major chemicals. Only strong oxidants such as nitric acid, sulphuric acid and halogens can damage PE. PE is a competitor to PP (polypropylene), which is often used in the manufacture of pumps. The temperature and chemical parameters of these two materials are believed to be similar. However, the overall similarity of the mechanical properties of these materials is limited: tests based on the interaction of these materials with water and sand have shown that the abrasion resistance of RE is 7 times higher than that of PP and 1.6 times higher than that of steel. RE is also more resistant than, for example, cast iron or aluminium. This high resistance plays an important role in many applications (electroplating baths, printing inks, lime milk, grinders and glazes in the ceramic industry). PTFE is a thermoplastic polymer or tetrafluoroethylene. It has a smooth surface and a very low coefficient of friction. It is physiologically harmless, can be used at high temperatures and has almost universal resistance to chemically aggressive environments. However, it is not very resistant to abrasion and becomes brittle at low temperatures. |
| PTFE: Polytetrafluoroethylene, fluoroplastic. One of the most chemically resistant materials. There are very few substances to which it is not resistant: alkali metals, gaseous fluorine and some fluorinated chemicals such as chlorotrifluoride or oxygen difluoride, which release free fluorine with increasing temperature. | -37°C +120°C |
Hygienic pumps made of polished stainless steel AISI 316L
| 15/30 | 25/75 | 40/125 | 50/315 | 65/565 | 80/850 | |
|---|---|---|---|---|---|---|
| Max. capacity, l/minv | 30 | 75 | 125 | 315 | 565 | 850 |
| Max. pressure, bar | 8 | |||||
| Size of pipe connections | DN 15 | DN 25 | DN 40 | DN 50 | DN 65 | DN 80 |
| Compressed air connection size | R 1/8" | R 1/4" | R 1/4" | R 1/2" | R 1/2" | R 3/4" |
| Dry suction height m.in.s. | 1.5 | 3.0 | 3.0 | 4.0 | 4.0 | 5.0 |
| Suction height under the bay, m.in.s. | 9 | |||||
| Max. diameter of solid particles, mm | 4 | 5 | 8 | 11 | 14 | 15 |
| Max. operating temperature - NBR, EPDM, °C | 80 | |||||
| Max. operating temperature - PTFE, °C | 120 | 110 | ||||
| Weight, kg | 5 | 8 | 11 | 26 | 34 | 85 |
| Housing material | AISI 316 | AISI 316L | ||||
| Material of membranes (diaphragms) | NBR, EPDM or TFM/PTFE | |||||
| Ball valve material | NBR, EPDM, PTFE, AISI 316 | NBR, EPDM, PTFE | ||||
| Material of the sealing rings | Silicone, PTFE, EPDM, NBR, FPM | |||||
| Material of the central unit | PE, PE conductive | |||||
| Standard for pipe connections | DIN 11850 (standard), DIN 32676 Tri-Clamp, SMS | |||||
| A | B | C | D | E | F | G | H | I | ØJ | pumps | L | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | TC | DN | SMS | L | ||||||||||
| DM 15/30 | 150 | 165 | 299 | 46 | 1/2" | 15 | - | 162 | R 1/8" | 282 | 18 | 30 | 116 | 103 |
| DM 20/75 | 230 | 264 | 419 | 75 | 1" | 25 | 25 | 204 | R 1/4" | 394 | 18 | 30 | 206 | 238 |
| DM 25/125 | 256 | 287 | 465 | 67 | 1 1/2" | 40 | 38 | 221 | R 1/4" | 440 | 18 | 30 | 226 | 257 |
| DM 40/315 | 350 | 387 | 679 | 102 | 2" | 50 | 51 | 247 | R 1/2" | 640 | 18 | 30 | 325 | 357 |
| DM 50/565 | 350 | 459 | 888 | 126 | 2 1/2" | 65 | 64 | 357 | R 1/2" | 842 | 18 | 30 | 326 | 435 |
| DM 80/850 | 590 | 600 | 1310 | 129 | 3" | 80 | 90 | 688 | R 3/4" | 1257 | 18 | 30 | 565 | 575 |
