Start with the decision you need to make. These guides explain how to compare vacuum equipment, check the figures in a datasheet and give Girovac the information needed for a useful quotation.
Compare flow and pressure
Understand pumping speed, end vacuum and operating conditions before comparing models.
Choose a backing pump
Check gas load, permitted backing pressure and roughing duty for a high-vacuum system.
Dry claw or rotary vane?
Compare MIL’S SIRELLA and EVISA using model-specific pressure and maintenance requirements.
Identify the right vacuum oil
Record the current grade and check chemistry, viscosity conditions and equipment approval.
Plan a central vacuum system
Define simultaneous demand, receiver and control requirements, then choose suitable measurement.
Choose a gauge and calibration scope
Compare pressure references and technologies, check interfaces and specify useful calibration points.
Compare products before buying
These guides cover named models and the details to settle before ordering. Start with the equipment you are considering.
Pumps
- Edwards EDO65 or EDO100: which industrial scroll pump fits the job?
- Buying an Edwards nXDS pump: six details to settle before ordering
- Leybold SCROLLVAC plus: why the electrical version belongs in the specification
- Specifying a Leybold NOVADRY for a packaging machine
- DVP SC 60 and LC 106: two rotary vane pumps for different duties
Complete systems
- Mobile or static MIL’S COMPOSITVAC: planning vacuum for the workshop
- Planning a MIL’S LABOVAC enquiry for a shared laboratory
Gauges and protection
Vacuum fundamentals and troubleshooting
These twelve guides explain the figures in a pump specification, the behaviour of a vacuum system and the checks that help when performance changes.
- Pumping speed vs ultimate pressure: what’s the difference?
- Choosing a vacuum pump: what your supplier needs to know
- Why isn’t my vacuum system reaching its target pressure?
- What is gas ballast, and when is it used?
- Why does a turbomolecular pump need a backing pump?
- Oil-sealed or dry vacuum pumps: what should you consider?
- Rough, high and ultra-high vacuum explained
- What is outgassing, and why does it slow evacuation?
- Why vacuum pipework can limit pumping performance
- Vacuum gauges explained: choosing the right measurement
- Vacuum leaks and outgassing: how do you tell the difference?
- Helium leak detection: local and integral testing explained
Have a model in mind?
Use the vacuum equipment catalogue to browse by brand or technology. Select “Compare” on up to three products to view their listed specifications together. Read the gas, frequency, pressure and test conditions alongside each value.
Replacing an existing pump?
Start with the full model reference and nameplate. Include the electrical supply, connections, controls, process gas and duty cycle. Check the complete duty and interfaces when choosing a replacement.
What to send for selection help
- Target working pressure and whether the duty is continuous or intermittent.
- Required gas flow, or vessel volume and required evacuation time.
- Process gases, vapours, particles and contamination requirements.
- Existing equipment, power supply, inlet and exhaust connections, cooling and available space.
Ask Girovac for help choosing equipment or call 01692 660 117.
Check the source behind the specification
The linked guides include manufacturer references where model-specific figures are used. Check the current documentation for the exact equipment and version being ordered. Allow for your chamber volume, gas load and pipework when applying performance data.
Find equipment for your application
Explore composite processing, laboratory vacuum, vacuum holding and CNC, or central vacuum systems. Each guide connects the process requirements with pumps, measurement and accessories.
Process-specific vacuum selection
Vacuum drying and degassing · Coating and deposition · Wet gases and vapours
Each guide connects process requirements with pump families, protection, measurement and the details needed for a quotation.