For a vacuum pump inquiry, provide the process purpose, gas composition, target pressure, required flow with units and measurement conditions, running pattern, possible liquids or dust, installation constraints, and electrical supply. If you are replacing a pump, add its nameplate and a dimensioned installation drawing. Mark unknown information clearly instead of estimating a specification from a model name.
These details give the inquiry a defined operating requirement. A category name or headline rating alone does not establish whether a particular configuration fits your process.
Describe the task: evacuating a vessel within a cycle, maintaining a process pressure, supplying several suction stations, or replacing an existing unit. For a cyclic process, include vessel volume, starting pressure, target pressure and available evacuation time. For a steady process, describe the incoming gas load and any known air leakage.
If several stations share the vacuum source, list their individual requirements and which operate together. Include normal and peak demand rather than only a single maximum figure. This makes it possible to request performance data for the operating conditions you actually need.
List the substances entering the pump, their expected quantities or ranges, and the inlet temperature range where known. Identify moisture, vapours and entrained material rather than describing everything as air. Explain changes during normal operation, startup, shutdown, cleaning and different production batches.
A broad label such as solvent service is not a complete compatibility specification. If composition is uncertain, state what is missing and ask which information is needed for a model-specific review. Do not assume chemical compatibility or a protective configuration from catalogue wording.
Give the target pressure with its unit and state whether it is absolute or gauge pressure. For an explanation of these references and units, see absolute and gauge vacuum pressure. Identify where the pressure requirement applies in the installation. Provide the required flow alongside that pressure, with units such as m³/h or L/min and the measurement conditions or reference basis used in your specification.
Keep the original units when sharing an existing specification. If the flow basis is unknown, label it as unknown. Ask for the proposed performance curve and test conditions so that figures can be compared on the same basis.
Do not treat a model number as a flow rating or a published end pressure as proof of evacuation time. For a timed evacuation, provide the volume, pressure range, gas load and pipework details as well.
State whether demand is continuous or intermittent. Record running and idle periods, expected starts, and changes in demand through the cycle. Include ambient conditions and available ventilation, especially when the pump will sit inside an enclosure.
This information allows the proposed duty rating and controls to be checked against the running pattern. Request model-specific duty limits; do not infer continuous-duty suitability from a product name.
Describe expected condensate, liquid carryover, particles or dust, including quantities or ranges where known. Identify filters, separators and pipework already installed. These are part of the installation being assessed, not details to leave until after choosing a model.
For a liquid-ring inquiry, also provide the working-liquid type, expected inlet temperature, available supply, and intended disposal or recirculation arrangement. State site limits on consumption and discharge. Request a defined circuit and component list rather than assuming separation or recirculation equipment is included.
Provide the available space, mounting arrangement, inlet and exhaust connections, service access and ventilation route. For an enclosed or replacement installation, include photographs and a dimensioned drawing showing the connection routes.
State supply voltage, phase and frequency, the intended control method, and any starting limitations. Ask for the specific motor option, connection specification and installation drawing. An existing model label alone is not enough to establish a direct replacement.
The following categories can help you identify what documentation to request. They do not replace a review of your operating conditions.
No. Add the nameplate, connections, electrical supply, installation dimensions and operating conditions so that the replacement can be checked.
Identify the missing information explicitly. Share the available process description and measurements, and ask what additional data is needed before selecting a configuration.
No. State your cleanliness, gas compatibility and duty requirements and request documentation for the exact configuration. A category label does not establish approval for a particular application or eliminate maintenance requirements.
Request the performance curve and test conditions, operating limits, installation drawing, motor option and maintenance instructions. For a system or liquid circuit, also request the configuration, component scope and operating sequence.
Copy the fields below into your message. Leave no uncertainty implicit: write unknown or not applicable where appropriate.
Process purpose and product being processed: New installation or replacement: Existing pump nameplate and installation drawing: Gas composition and expected quantities or ranges: Inlet temperature and changes during startup, shutdown or cleaning: Target pressure, unit, absolute/gauge basis and measurement location: Required flow, unit and measurement/reference conditions: Vessel volume, starting pressure and required evacuation time: Normal/peak demand and simultaneous suction stations: Continuous/intermittent operation, run/idle periods and expected starts: Liquids, condensate, dust or particles: Existing filters, separators and pipework: Working-liquid supply, temperature and circuit, if applicable: Backing equipment and operating sequence, if applicable: Available space, mounting, connections, ventilation and service access: Electrical supply: voltage, phase and frequency: Controls and starting limitations: Required cleanliness or other process constraints: Available documents and information still unknown:
Send your completed checklist through the Contact page. Include the category or model you are considering, if known, together with the operating requirements rather than the model name alone.
