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VACUUBRAND MD 4 VARIO Select Diaphragm Pump
Product Description
VACUUBRAND MD 4 VARIO Select Diaphragm Pump
Ultimate Vacuum 1 mbar (0.75 Torr) Maximum Pumping Speed 3.4 CFM at 60Hz Number of Heads/Stages 4/3
Features
- VACUU-SELECT vacuum controller with graphical user interface and predefined applications simplifies work in the laboratory
- Extraordinary diaphragm life for minimum operational and servicing costs
- Contamination-free pumping and evacuation
- Excellent ultimate vacuum and TURBO-MODE for use as backing pump for turbo pumps
This three-stage diaphragm pump is an excellent solution for continuous, oil-free pumping of non-corrosive gases to a vacuum level as deep as 1 mbar. All wetted parts are made of aluminum, stainless steel and carefully selected plastics suitable for a wide range of applications with non-corrosive gases. The MD 4 VARIO select continuously adapts its motor speed to hold the desired vacuum level. That means the pump is whisper-quiet and generates ultra-low vibrations and has high leak tightness. The highly flexible fabric reinforced double FKM diaphragm is ideal for extended operating life. The VARIO design includes the variable speed pump and the VACUU·SELECT vacuum controller with external gauge head. The demand-responsive motor speed control on VARIO models further extends the already long lifetimes of diaphragms and valves.
These three-stage diaphragm pumps are an excellent choice for continuous, contamination-free evacuation and pumping of non-aggressive gases at demanding vacuum conditions. They are especially suitable for applications requiring high volume flow in physics and analytics. The low ultimate vacuum makes these an attractive alternative to rotary vane pumps. Typical uses are as backing (roughing) pumps for turbomolecular drag pumps, for degassing of viscous media, as well as for exhaust gas analytics. Additionally, the VARIO model provides vacuum control by precise adjustment of the diaphragm pump´s motor speed to process requirements. Back diffusion of oil or even oil back flow, e.g., into a high vacuum chamber is excluded due to its oil-free operation. For equipment manufacturers customized versions are available. Depending on the application, the demand-responsive motor speed control of VARIO models further extends the long diaphragm life for which VACUUBRAND pumps are well-known. In addition, it provides an even higher pumping speed and enables precise vacuum control.
INCLUDED: The VACUUBRAND MD 4 VARIO Select Diaphragm Pump includes:
- Power Cord
- Operator's Manual
- Manufacturer's Documentation
- 2 Year Manufacturer's Warranty
Item Stats
Product details
| Max. pumping speed 50 Hz | 5.7 m 3/h |
| Max. pumping speed 60 Hz | 3.4 cfm |
| Ultimate vacuum | 1 mbar / 0.75 torr |
| Number of heads | 4 |
| Number of stages | 3 |
| Lower ambient temperature (operation) | 10 °C |
| Upper ambient temperature (operation) | 40 °C |
| Lower ambient temperature (storage) | -10 °C |
| Upper ambient temperature (storage) | 60 °C |
| Max. back pressure (abs.) | 1.1 bar |
| Inlet connection | small flange KF DN 16 |
| Outlet connection | Silencer / G1/4" |
| Rated motor power | 0.53 kW |
| Protection class IEC 60529 | IP 20 |
| Dimension L in mm | 325 mm |
| Dimension B in mm | 235 mm |
| Dimension H in mm | 245 mm |
| Weight | 19.1 kg |
| Noise (sound pressure level) in dBA at 50 Hz or 1500 rpm/62% (VARIO)/1500 rpm (VARIO-SP)/12500 Upm (VACUU·PURE®) | 45 dBA |
| NRTL certification | No |
| Items supplied | Pump completely mounted, ready for use, with manual. |
| Rated mains voltage range 1 | 100-120 V |
| Mains frequency 1 | 50-60 Hz |
| Interface | Ethernet (RJ45): Modbus TCP / USB (Type A): Data transfer, software update, RS-232 (additional adapter required) |
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