Steam Jet Vacuum Pumps (Single-Stage)

• A single pump can manage very large flow volumes of up to 1000000 m³/h without problems.
• Absolutely no difficulties in the case of process media with a strong tendency towards fouling and small amounts of solids or liquids
• Corrosion/erosion resistance by choosing suitable material
• Easy installation
• High standard of operational reliability and vacuum performance
• Low investment costs in comparison to other possible alternatives
• No moving parts
• Practically maintenance free
• Simple compact construction

If a plant is to be evacuated within a given time, for example, during starting up, and the vacuum pump which maintains the operational vacuum takes longer than the given time, a jet pump is added as a start-up pump or pre-evacuator to speed up the evacuation. It is brought into operation together with the vacuum maintaining pump, but works only until the required vacuum, or a determined intermediate vacuum is reached.

Steam jet vacuum pumps are commonly used for handling condensable and noncondensables in processes such as

• Absorption
• Cooling
• Distillation
• Exhausting air from vacuum pans and evaporators
• Exhausting tire molds
• Freeze drying
• Handling corrosive gases
• Mixing
• Priming centrifugal pumps
• Production of vacuum in stirred vessels in discontinuous processes
• Vacuum packaging

When compressing against atmospheric pressure, used for the production of vacuum down to a suction pressure approx. 100 mbar.
Single stage start-up jet pumps can, according to the motive steam pressure, achieve a suction pressure of 50 – 200 mbar.

• Cast iron
• Cast stainless steel
• Other materials on request
• Steel or stainless steel
• Temperature change resistant porcelain