A wet-gas duty can involve water vapour, solvent vapour, condensate or entrained droplets. These are different loads. Identify what can reach the pump and how conditions change during operation before choosing the technology.
Describe the load clearly
- Gas and vapour composition, concentrations and process temperature.
- Expected condensate and whether liquid droplets or solids can be carried over.
- Required absolute pressure and flow at that pressure.
- Start-up, continuous and shutdown conditions, including temperature changes.
- Available cooling or service liquid, exhaust destination and waste handling.
Compare technologies within their limits
Liquid-ring pumping: MIL’S ANTIGUA provides a liquid-ring option for suitable duties. The service liquid, its temperature and vapour pressure, contamination and recovery arrangement are part of the selection; wet-gas capability is not unlimited liquid-slug tolerance.
Chemical-resistant diaphragm pumping: Edwards D-LAB is a laboratory option where gas compatibility and the 8 mbar rated ultimate pressure at 50 Hz meet the requirement. Specify separation or condensation accessories for the process.
Oil-sealed or dry pumping: SOGEVAC, EVISA and DRYVAC offer different approaches. Check the exact model’s vapour limits, purge or gas-ballast requirements and protection arrangements. Dry describes the pumping principle, not universal immunity to condensation.
Plan separation and exhaust handling
Locate any separator, condenser or filter where it protects the intended component and can be maintained. Include drainage, monitoring and exhaust arrangements in the system scope. Condensation inside the wrong part of a system can change both performance and maintenance needs.
Filters and separators · Drying and degassing guidance · Maintenance and repairs
Does gas ballast make any pump suitable for wet gas?
No. Where fitted and approved for the duty, gas ballast can help manage condensable vapours, but it changes operating performance and has model-specific limits. It does not replace inlet liquid separation or a compatibility assessment.
Get help specifying the equipment
For wet-gas or vapour pumping, send the chamber volume, target and working pressures, required cycle time, gas or vapour composition, temperature, operating hours and available power. Include any existing pump and gauge details. Girovac can then review the pump, protection, instrumentation and accessories as one proposed scope.
Discuss your application · Check the quotation scope · Explore other applications