Industrial Vacuum Pumps: Rotary Vane and Claw
Dry running industrial vacuum, sized to your air load and serviced from 14 Midwest locations.
Which industrial vacuum pump should I specify?
For clean, dry process and handling vacuum, a rotary vane or claw pump is usually the right answer. Rotary vane pumps are versatile and reach a deep vacuum, while dry claw pumps run with no rotor contact for low maintenance continuous duty. If your gas stream is wet or loaded with vapor or particulate, step up to a liquid ring pump instead. Tell us the vacuum level, flow, and gas stream and Brabazon will size the pump before quoting a brand.
What an industrial vacuum pump does
An industrial vacuum pump removes air or gas from an enclosed space to create the pressure difference a process relies on. That difference does the work: it holds a part against a fixture, lifts product with suction cups, pulls a web flat, evacuates a chamber, or draws vapor out of a process. The two common dry technologies work in different ways. A rotary vane pump carries sliding vanes in an offset rotor that sweep gas from the inlet to the discharge, and it can reach a deep vacuum in both oil sealed and dry running forms. A claw pump uses two claw shaped rotors that mesh closely without touching, compressing and expelling gas cleanly with no wearing contact between the rotors, which makes it efficient and low maintenance for continuous duty.
When to specify dry industrial vacuum
Reach for a dry industrial vacuum pump when the gas stream is clean and dry and you want to avoid the water handling a liquid ring pump requires. Typical fits include vacuum holding and lifting on packaging and material handling lines, thermoforming and web handling, central vacuum for a bank of workstations, and general process evacuation where the gas is not contaminated. Rotary vane suits duties that need a deeper vacuum or flexible operation, while claw pumps shine on continuous clean duty where energy use and maintenance intervals are the priority. When several stations share one central pump, size the pump to the worst case simultaneous demand rather than the sum of every port.
Sizing an industrial vacuum pump
Size to the working vacuum level and the actual air load, then confirm margin. Start with the volume being evacuated and the vacuum level the process demands, then add realistic leakage and any process outgassing, because both raise the flow the pump must move to hold vacuum. Verify that the pump reaches and holds your target level at that flow, not just at zero load. If the application must pump down quickly, displacement drives the pump down time, so a fast cycle needs more flow than a slow one at the same vacuum. Watch inlet conditions too: temperature, filtration, and altitude all shift the working point. Undersizing leaves you short of vacuum, while gross oversizing wastes energy and shortens vane and seal life.
Service and failure considerations
Dry industrial vacuum pumps live on clean inlet gas. The most common failures trace back to ingested liquid or particulate, so inlet filtration and, where needed, a knockout or separator protect the pump and pay for themselves. Rotary vane pumps wear their vanes over time and oil sealed versions need oil and filter service on schedule; skipping it lets the vacuum level drift and the pump run hot. Claw pumps have no rotor contact but still depend on clean gas, correct clearances, and bearing and gear oil maintenance. Watch for a rising ultimate pressure, higher operating temperature, or new noise as early signs. Our technicians rebuild and service vacuum pumps in the shop and in the field to keep the working vacuum where it belongs.
Vacuum pump lines available through Brabazon
Brabazon supplies industrial vacuum pumps and packages from Becker, Airtech, Dekker, and Global Vac. We match the line to your vacuum level, flow, and gas stream rather than starting from a brand, then support the equipment with parts and service.
Industrial vacuum pump questions, answered first
What is an industrial vacuum pump used for?
An industrial vacuum pump removes air or gas from a space to create the pressure difference a process needs. Common jobs include holding and lifting product on packaging and handling lines, evacuating vessels, degassing, drying, and drawing process gases. The pump type follows the job: clean dry duty suits rotary vane or claw pumps, while wet or contaminated streams call for a different technology.
What is the difference between a rotary vane and a claw vacuum pump?
A rotary vane pump uses sliding vanes in a rotor to sweep out gas and can reach a deep vacuum, while a claw pump uses two non contacting claw shaped rotors for efficient, dry, and low maintenance operation. Rotary vane pumps come in oil sealed and dry running versions and are versatile across many duties. Claw pumps run dry with no contact between rotors, which suits continuous clean duty where low maintenance and energy use matter.
How do I size an industrial vacuum pump?
Size the pump to hold your target vacuum level at the real air load, not just the free air rating. Add up the volume being evacuated, expected leakage, and any process outgassing, then confirm the pump reaches and holds your working vacuum with margin. Pump down time also depends on displacement, so a job that must evacuate quickly needs more flow. Send your vacuum level and load and an engineer will confirm the working point.
When should I not use a dry industrial vacuum pump?
Avoid a dry pump when the gas stream carries liquid, condensable vapor, or heavy particulate. Those loads foul or wear a dry pump quickly, and a liquid ring pump handles them far better because its sealing liquid absorbs heat and tolerates wet, dirty gas. If your stream is clean and dry, a rotary vane or claw pump is the efficient choice. See our liquid ring vacuum pump page for wet duty.
Talk to a vacuum engineer about your process
Send your vacuum level, flow, and gas stream and an engineer will size the right industrial vacuum pump, then quote sale, rebuild, or service. We answer 24/7.
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