How JET-VAC® Ejectors work
- Steam is fed at high pressure and relatively low velocity into the motive connection.
- Steam expands through the ejector nozzle and changes into a high-velocity/low-pressure stream. When lower than atmospheric pressure, a vacuum is created.
- A low absolute pressure attracts the gases to be pumped from the vacuum vessel.
- Momentum is transferred between fluids, raising the pressure of the fluid being pumped.
- The mixture of fluids then discharges to the discharge line (or the next ejector in multi-stage designs).
JET-VAC Ejectors convert pressure to velocity with no moving parts
- JET-VAC ejectors operate by converting high-pressure steam into a high-velocity stream, which entrains and accelerates the gasses on the suction side of the device to create a vacuum.
- The design of a JET-VAC ejector defines its performance. Vacuum can be created by a single device or by multiple-stage devices linked together to achieve very deep, specific vacuum levels.
- JET-VAC ejectors can use process vapors or any compressible gas or a liquid instead of steam as the motivating fluid, and ejector components can be manufactured in corrosion-resistant materials for use in corrosive environments.
- Where steam availability is limited, JET-VAC ejectors can also be incorporated into compact, modular hybrid systems with liquid ring pumps for low vacuum level installations.
Applications include: Evaporation, Stripping, Refrigeration, Filtration, Distillation, Crystallization, Drying, and Degassing
JET-VAC Ejector products include:
- Related Literature
- Vacuum Systems (261K)
- Vacuum Chillers (461K)