Laboratory vacuum systems

ChemStar® oil-free vacuum systems for chemical applications

Combination of two technologies: Roots blowers and diaphragm vacuum pumps. The result is an oil-free, software-controlled vacuum system that is ready to perform in harsh chemical conditions - cleanly, quickly and thoroughly. The systems are developed specifically for laboratory operations that require high pumping speeds and high vacuum. The systems combine booster vacuum pumps with patented PTFE diaphragm technology that has a pumping speed (150 l/min) in the working range for most evaporation operations (2.0 to 0.1 mbar) and that can reach a maximum pressure of 10-2 mbar.

Key features of chemically resistant vacuum systems:

• Max. pumping speed at 50 Hz in m³/h (l/min) 8.4 (140)
• Max. pumping speed at 60 Hz in m³/h (l/min) 10.1 (168)
• Final pressure in mbar (Torr) without load: 7x10-2
• no oil backflow
• no oil change or disposal
• cleaner working environment and cleaner samples
• less maintenance

Use of chemically resistant vacuum systems in real life:

• The system is usually a vacuum source for laboratory vacuum sets (Schlenk Line). Vacuum is used here to remove the last traces of solvents from the samples.
• The system can be used for freeze drying (lyophilization) of samples using a deep vacuum.
• ChemStar® is also suitable for vacuum furnaces. Here it is used for extraction of discharged vapors and contaminated water steam.

• The ChemStar® Dry vacuum system provides the necessary atmosphere in the laboratory vacuum boxes (Lab glow box).
  
  More information about the Chemstar® oil-free vacuum system ►

Univac MPKC laboratory vacuum systems

Univac systems are available with either 4 or 6 chemically resistant diaphragm pumps (MPC) mounted on a cart with a microprocessor control system. With a maximum vacuum (75 mbar, 8 mbar and 2 mbar) and a maximum flow rate (up to 50 m³/h), Univac systems are designed to deliver vacuum to the entire laboratory and can achieve low final vacuum with high flow rate within the same amount of time.

Key characteristics of the Univac MPKC system:

• Max. pumping speed at 50 Hz: 33 m³/h
• Max. pumping speed at 60 Hz: 36 m³/h
• Final pressure: <2 mbar
• easy system service
• each diaphragm pump has a valve for a separator

Use of the MPKC laboratory vacuum systems in real life:

       Lists of Univac MPKC laboratory vacuum system models can be found here ►
 

CDK compact turbomolecular pumping systems

Complete ready-to-use units for high vacuum generation with extremely high pumping speed in the front vacuum area. The systems feature a compact design and user-friendly vacuum system controls.

Key parameters of CDK turbomolecular pump systems:

• Pump life of up to 10,000 operation hours
• Noise level is significantly reduced thanks to a noise cover
• The operating cost for energy consumption is reduced, which is particularly noticeable when using several CDK turbomolecular vacuum pumps.

Use of CDK compact pumping systems in real life:

       Lists of the CDK turbomolecular pump system models can be found here ►
 

Mobile turbomolecular pumping systems STP

These mobile units are designed to generate high vacuum with extremely high pumping speeds in the front vacuum area.

The mobility of the system allows it to be placed as close to the boxes as possible, meaning that only short vacuum lines are needed. A short vacuum line guarantees low flow losses and consequently high pumping speeds from the vessel.

Key characteristics of the WELCH STP series mobile turbomolecular systems:

• Pumping speed of the turbomolecular vacuum pump: 250 l/s.
• Pumping speed of the diaphragm vacuum pump: 4.5 m³/h.
• set mobility
• system lifetime of up to 10,000 operation hours thanks to the diaphragm vacuum pump.
• mobile motherboard
• short pipe connection parts
• no residual hydrocarbons (STP/D version)
• energy-saving equipment
  
  Model lists of the mobile turbomolecular systems of the STP series can be found here ►

Mobile diffusion oil vacuum pumps and DP systems

Oil diffusion vacuum pumps are used to produce high and ultra-high vacuum. They can reach a limit pressure of up to 5x10-7 mbar with extremely high pumping speeds. In addition to individual vacuum pumps, we also offer complete vacuum systems with oil diffusion vacuum pumps.

To use a diffusion vacuum pump, a vacuum pre-pump must be connected. Diffusion vacuum pumps operate without rotating parts. To achieve a high vacuum range (maximum pressure of 5x10-7 mbar), they use an oil shower. The absence of parts susceptible to wear and tear results in the diffusion vacuum pumps having a long service life. The vacuum pumps can achieve pumping speeds (up to 210 l/s).

All oil diffusion vacuum pumps are complete, including a high vacuum valve, fittings, reverse valve and coarse vacuum extraction valve.

Key characteristics of the DP series of the mobile diffusion oil vacuum pumps and systems:

• extremely high pumping speed ofup to 210 l/s
• low consumption of cooling water
• no moving mechanical parts
• noise-free and vibrations-free operation
• manual valve control (for the PDM type) / electro-pneumatic valve control (for the PDP type)
  
  More information about the WELCH of the diffusion vacuum pumps ►