The DVP SA3 Has Been Discontinued

The DVP SA3 is no longer included in the current DVP production range. However, discontinuation does not necessarily mean that an existing pump must immediately be replaced.

Depending upon its condition, an SA3 may continue to be supported with replacement vanes, service parts, service kits and workshop repair. Parts availability should be checked against the complete model and serial number before work is started.

The nearest current DVP dry-running rotary vane alternative is the DVP SC5. It provides increased capacity while retaining the same stated ultimate vacuum of 120 mbar absolute.

The SC5 should not automatically be treated as a direct drop-in replacement. Overall dimensions, mounting points, pipe connection, electrical supply, operating duty and available installation space should be confirmed first.

View the Current DVP SC5

DVP SA3 Overview

The DVP SA3 was a small industrial dry-running rotary vane vacuum pump designed to provide oil-free vacuum from a compact and lightweight package.

The pump used a monoblock design in which the rotor was assembled directly onto the motor shaft. This reduced the number of separate drive components and helped keep the overall dimensions and weight low.

The main pump components were manufactured largely from lightweight alloys, allowing the SA3 to be installed inside machinery where available space was limited, provided that adequate ventilation remained available around the pump.

The SA3 provided a nominal inlet capacity of 3 m³/h at 50Hz and 3.3 m³/h at 60Hz. Its stated ultimate vacuum was 120 mbar absolute.

An outlet silencer was included as standard. Single-phase versions also incorporated a 130°C thermal protector.

The SA3 could additionally be used as a low-pressure compressor, although the operating requirements and permitted pressure would need to be confirmed before using an existing pump in this way.

Original DVP SA3 Technical Data

Technical details should be checked against the individual pump nameplate because electrical versions and production revisions may differ.

Typical SA3 Applications

The precise original machine duty should always be checked. Compact dry-running vacuum pumps of this capacity are commonly found on smaller machinery requiring clean vacuum, modest airflow and continuous or intermittent industrial operation.

Why Was the DVP SA3 Used?

The SA3 provided a practical source of low-capacity oil-free vacuum for machinery where overall pump dimensions and weight were important.

Its direct-drive monoblock construction eliminated the need for a separate coupling or belt-drive arrangement. This helped produce a compact unit that could be incorporated within industrial and OEM machinery.

The absence of lubricating oil within the pumping chamber also avoided routine pump-oil changes and reduced the possibility of oil being introduced into the vacuum line.

Vacuum Pumps UK can assist with identification, service support, spare parts, service kits and replacement-pump advice.

Key DVP SA3 Features

SA3 Vanes and Planned Maintenance

The vanes within a dry-running rotary vane pump are service components that gradually shorten through normal contact with the internal pumping chamber.

Vane condition should be assessed according to running hours, operating temperature, inlet cleanliness, duty cycle and the amount of dust or debris entering the pump.

A gradual reduction in vacuum performance, reduced airflow, increased noise or hotter operation may indicate worn vanes, restricted filtration, leakage or internal pump wear.

Vacuum Pumps UK and our sister company, VacAir Superstore, can assist with replacement vanes, seals, gaskets, filters and service parts for the DVP SA3, subject to confirmation of current availability.

Should You Repair or Replace a DVP SA3?

A discontinued SA3 that has gradually lost performance may only require replacement vanes, seals, filtration or workshop attention rather than complete replacement.

Repair may remain economical where the pump body, rotor, motor and main internal surfaces are still in serviceable condition and the required parts remain available.

Replacement becomes more attractive where the pump has suffered major internal damage, the motor has failed, repair parts are unavailable or repeated breakdowns are affecting production reliability.

We can review both options and advise whether servicing the existing SA3 or replacing it with a current DVP pump offers the better long-term result.

Current DVP Alternative: SC5

The DVP SC5 is the nearest current mains-powered DVP dry-running rotary vane model to the discontinued SA3.

The SC5 provides increased pumping capacity of 5 m³/h at 50Hz and 6 m³/h at 60Hz, while retaining an ultimate vacuum of 120 mbar absolute.

The SC5 has a higher pumping capacity than the original SA3. This may provide faster evacuation or additional airflow, but it also means that suitability should be assessed against the machine and its normal operating requirements.

Before replacement, we recommend checking the voltage and phase, motor rating, pump dimensions, mounting arrangement, inlet connection, available ventilation and expected operating duty.

Need Help Confirming the Correct SA3 Replacement?

Send us a clear photograph of the SA3 nameplate together with details of the machine and how the pump is being used.

We can compare the original airflow, ultimate vacuum, voltage, phase, motor power, inlet connection, mounting and available installation space before recommending the most suitable current model.

Send us the SA3 details and information about the application.

DVP SA3 Frequently Asked Questions

Is the DVP SA3 still manufactured?

No. The DVP SA3 is a discontinued dry-running rotary vane vacuum pump and is no longer included in the current DVP production range.

Is the pump also known as the DVP SA.3?

Yes. SA3 and SA.3 are alternative ways in which the standard pump model may be written in manuals, records and equipment documentation.

What pumping capacity did the SA3 provide?

The nominal pumping capacity was 3 m³/h at 50Hz and 3.3 m³/h at 60Hz.

What ultimate vacuum could the DVP SA3 achieve?

The stated ultimate vacuum was 120 mbar absolute.

What motor power did the SA3 use?

The single-phase version was rated at 0.12 kW at 50Hz and 0.15 kW at 60Hz. The three-phase version was rated at 0.12 kW at 50Hz and 0.14 kW at 60Hz.

Was the DVP SA3 oil free?

Yes. The SA3 was a dry-running rotary vane pump and did not require lubricating oil inside the pumping chamber.

Can an existing DVP SA3 still be repaired?

Possibly. Repair will depend upon the condition of the pump, the extent of internal wear and the availability of the necessary vanes and service components.

Are replacement vanes available for the DVP SA3?

Replacement vanes may remain available. The model and serial number should be checked before parts are ordered because pump versions and component references can differ.

Can you supply a service kit for the SA3?

Vacuum Pumps UK can check the availability of genuine DVP service kits and individual components for the SA3. Availability should be confirmed at the time of enquiry.

What is the current alternative to the DVP SA3?

The DVP SC5 is the nearest current DVP mains-powered dry-running rotary vane alternative. It provides 5 m³/h at 50Hz and 6 m³/h at 60Hz, with an ultimate vacuum of 120 mbar absolute.

Is the DVP SC5 a direct replacement for the SA3?

It should not automatically be assumed to be a direct drop-in replacement. The dimensions, mounting, pipe connection, voltage, phase, motor specification, ventilation and machine duty should be checked before ordering.

Can the SA3 operate as a compressor?

Yes. The original DVP information stated that the SA3 could also be used as a compressor. The required airflow, permitted pressure and operating conditions should be confirmed before using it in this way.

Can you inspect my existing SA3?

Yes. Send us photographs of the pump and nameplate together with details of the fault. We can advise whether parts, workshop inspection, repair or replacement are likely to be the most appropriate route.