Multi-Stage Vacuum Trains
Up to six stages with surface or direct-contact inter-condensers reaching 0.05 mbar absolute.
SAMHWA
Vacuum and pumping power from pure fluid dynamics.
Ejectors
Steam jet vacuum systems and eductors with no moving parts, engineered for absolute reliability.
Overview
Engineered ejectors, done properly.
SAMHWA ejectors use the momentum of a high-pressure motive fluid — steam, gas or liquid — to entrain, compress and pump a suction stream with no moving parts whatsoever. From single-stage eductors to six-stage vacuum trains with inter-condensers, our systems deliver decades of maintenance-free service.
Each ejector is custom-designed from motive nozzle to diffuser using proprietary sizing correlations refined over 45 years, and performance-tested against HEI standards before despatch.
Features
Designed in the details.
HEI Performance Testing
Full-load shop testing to Heat Exchange Institute standards with witnessed test options.
No Moving Parts
Nothing to wear, seize or maintain — ideal for remote, hazardous and critical services.
Any Motive Fluid
Steam, air, gas and liquid motive designs including hybrid liquid-ring combinations.
Corrosion-Proof Builds
Carbon steel to titanium, graphite-lined and PTFE-lined for the harshest chemical duties.
Thermocompressors
Steam recompression units that recycle waste flash steam back into plant service.
Applications
Where it earns its keep.
Refinery crude tower vacuum
Evaporator & crystalliser vacuum
Deaerator and degassing systems
Chemical reactor evacuation
Tank mixing eductors
Priming of large pumps & siphons
Flare gas recovery
Marine freshwater generators
Specifications
The numbers that matter.
| Types | Steam jet ejectors, eductors, thermocompressors, hybrid systems |
|---|---|
| Suction pressure | 0.05 mbar(a) – atmospheric |
| Capacity | 0.1 – 150,000 kg/h equivalent air |
| Stages | 1 – 6 with inter/after-condensers |
| Motive fluids | Steam, air, nitrogen, process gas, liquids |
| Materials | CS, SS, duplex, titanium, graphite, PTFE-lined |
| Testing | HEI shop performance test, NDE, hydro |
| Codes | HEI, ASME VIII, PED 2014/68/EU |
Full datasheets, sizing software outputs and drawings available on request — contact our engineers.
Gallery
In the workshop and in the field.
Related Products
Complete the system.
Specify ejectors with confidence.
Send us your process conditions — flow, fluids, temperatures and pressures — and receive a technical proposal within 48 hours.