Vacuum Pump Oil Filter 0531000005

LVGE Ref.: LO-303

OEM Ref.: W950, 0531000005

Dimensions: Ø95*205mm

Interface Size: 1’’-12UNF

Application: 400~630m³/h

Application Temperature: ≦110℃

Opening Pressure of Bypass Valve: 100±20kpa

Filtration Efficiency: More than 80% for 20um dust particles

Product Positioning: The vacuum pump oil filter is a critical purification component in the lubrication circuit of rotary vane, screw, and piston vacuum pumps. It continuously removes suspended particles, colloids, and oxidation by‑products from the oil through both physical interception and adsorption, ensuring that oil cleanliness is maintained at the high levels specified by ISO 4406.

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Vacuum Pump Oil Filter Working Principle:

When a vacuum pump operates, lubricating oil circulates between the pump chamber and the oil reservoir. The vacuum pump oil filter is installed in‑line in the oil circuit. High‑temperature oil discharged from the pump first passes through the high‑precision filter element inside the filter, where contaminants are trapped on the surface and within the depth of the filter media. Clean oil then returns to the reservoir to be re‑supplied to the pump chamber. Some advanced designs also incorporate a built‑in bypass valve, which automatically opens when the filter element becomes clogged to a set differential pressure (typically 1.5–2.5 bar), preventing the pump from running dry.

Vacuum Pump Oil Filter Replacement Indications

If an aged vacuum pump oil filter is not replaced in time, the following symptoms may appear:

Abnormal fluctuations in oil pressure readings (too high or too low)
Increased pump body temperature and louder noise
Significant drop in ultimate vacuum pressure
Oil appearing black, emulsified, or containing visible particles in the sight glass

We recommend recording the differential pressure indicator (if fitted) regularly. When the differential pressure exceeds 1 bar, a replacement should be scheduled.

How to Get Selection Assistance?

Please contact us via any of the following methods:

Send a photo of the vacuum pump nameplate to our customer service email.
Provide three‑view dimensions of the old filter element (outer diameter, inner diameter, height, thread specification).
Inform us of the oil type and operating temperature range.

Our engineers will provide a suitable vacuum pump oil filter model and quotation within 2 hours.