Independent machinery sourcing · Handover

rotary vane vacuum pump

Rotary Vane Vacuum Pump Sourcing is an independent sourcing partner for US buyers who need a rotary vane vacuum pump matched to chamber volume, process gas and a named working pressure. Share pumping speed in m³/h or ACFM, ultimate pressure in mbar or Torr with the gas-ballast setting, quantity and destination so we can request comparable factory wholesale quotes. This site does not sell from stock and does not claim original-equipment identity. A catalog ultimate-pressure figure is not a process answer until the chamber, leak rate and gas load are written into the RFQ.

Request Factory Quotes

Trial sequence

Representative sample
Use the intended process gas or an agreed vapor mix, plus the chamber volume that will appear in the purchase specification. An empty-pump demonstration at ultimate pressure is a shop check, not proof of pump-down time for your vessel.
Demonstration
Run pump-down to the working pressure with the agreed gas ballast, inlet restriction and exhaust path. Record time, residual pressure and oil temperature at the same measurement boundary rather than only a free-air pumping-speed number.
Acceptance record
Write pass criteria as working pressure at the chamber, leak-up rate and oil or vane condition after the named duty cycle. Those notes become FAT and SAT language later. Read working-pressure selection.

Replacement versus new installation

A rotary vane vacuum pump RFQ is useful when the buyer states whether the pump replaces an existing skid or starts a new vacuum circuit. We collect envelope, connection and operator checks so manufacturers quote the same work envelope instead of dissimilar headlines.

Existing process

Existing oil-sealed sets often fail when vapor load, dust or duty cycle exceeds the oil-management plan. A dry rotary vane alternative can change service, but it does not automatically fit the same inlet flange, exhaust treatment or motor frame. HVAC service tools and unrelated pump technologies sit outside this landing page.

State the current pumping speed, ultimate pressure with gas ballast open and closed, oil volume in litres, inlet size and whether the skid stays. Replacement is not a drop-in until those items are listed.

Documents that make a rotary vane vacuum pump quotation comparable

Drawing or process description
Chamber volume, piping length, leak estimate and whether the duty is pump-down, continuous gas handling or both. Name oil-sealed or dry rotary vane construction as a question, not as a finished selection.
Operating conditions
Target working pressure, cycle time, gas or vapor composition, inlet filtration and exhaust treatment. Ask for pumping speed at the working pressure, not only a free-air figure, and for ultimate pressure with gas ballast open versus closed when oil-sealed construction is in scope.

Missing documents delay comparable quotes; factories then assume clean, dry air and a shop ultimate-pressure test that may not match the plant. Mark unknowns instead of inventing a Torr value.

Questions that define the first brief

Which procurement scope is covered by rotary vane vacuum pump?

Base machine

Pump, motor, listed controls, standard inlet filter and the gas-ballast hardware named in the offer.
Standard oil charge or graphite vane set as listed; accessories not named are extra.

Which responsibilities remain with the equipment supplier and buyer?

The buyer supplies chamber data or an agreed representative volume, process gas, quantity and destination. The supplier confirms construction (oil-sealed or dry), pumping speed at working pressure, utilities and whether installation, training and spare parts sit inside the offer. Rotary Vane Vacuum Pump Sourcing coordinates those assumptions; FAT and SAT stay on the purchase contract with the named factory. See also inquiry options and oil-management notes.