DVP RD2D Two-Stage Refrigeration Vacuum Pump
The DVP RD2D is a compact two-stage oil-lubricated rotary vane vacuum pump designed specifically for evacuating refrigeration and air-conditioning systems.
Delivering 1.8 m³/h at 50Hz and 2 m³/h at 60Hz, the RD2D combines deep-vacuum performance, lightweight construction and a portable design suitable for residential, commercial and automotive refrigeration work.
Vacuum Pumps UK is the UK & Ireland Master Agent for DVP Vacuum Technology.
Need a portable vacuum pump for refrigeration or air-conditioning service?
Send us the system type, approximate volume, required evacuation level and electrical supply.
We can confirm whether the compact RD2D provides the required pumping speed and final pressure.
Pump Design
Two Stage
oil-lubricated rotary vane
Capacity
1.8 / 2 m³/h
50Hz / 60Hz
Ultimate Pressure
<0.5 mbar
absolute
Motor Power
0.12 / 0.15 kW
50Hz / 60Hz
DVP RD2D Overview
The DVP RD2D is a compact two-stage high-vacuum pump developed specifically for refrigeration and air-conditioning service applications.
Its two pumping stages operate in series, allowing the RD2D to achieve a significantly lower final pressure than a comparable single-stage service pump.
The pump provides 1.8 m³/h at 50Hz and 2 m³/h at 60Hz, with a stated ultimate pressure of less than 0.5 mbar absolute.
The industrial monoblock design has the rotor mounted directly on the motor shaft. This reduces the number of transmission components and helps keep the pump compact and lightweight.
Lightweight alloys are used throughout the construction, making the RD2D suitable for portable service work, restricted installation spaces and mobile refrigeration equipment.
The pump must still be installed or operated where sufficient ventilation is available around the motor and pump body.
Typical RD2D Applications
The RD2D is intended for evacuating refrigeration and air-conditioning systems before charging, commissioning, servicing or repair.
Residential air-conditioning systems
Domestic refrigeration equipment
Small commercial refrigeration systems
Heat-pump service and installation
Automotive air-conditioning systems
Vehicle refrigeration units
Mobile refrigeration service equipment
OEM refrigeration machinery
Why Refrigeration Systems Must Be Evacuated
Evacuating a refrigeration or air-conditioning system removes air, moisture and other non-condensable gases before the refrigerant is introduced.
Moisture left inside the circuit can freeze at expansion devices, react with refrigerant and oil, contribute to acid formation and reduce long-term system reliability.
Non-condensable gases can increase operating pressures, reduce heat-transfer efficiency and place additional load on the compressor.
The RD2D provides the deep vacuum needed to support proper system dehydration and preparation before charging.
Key RD2D Features
Two-Stage Vacuum Performance
Two pumping stages connected in series help the RD2D achieve a stated ultimate pressure of less than 0.5 mbar absolute.
Compact Monoblock Design
The rotor is mounted directly on the motor shaft, reducing the overall size and number of drive components.
Lightweight and Portable
Lightweight alloy construction and an integral transport handle make the pump suitable for mobile service work.
Oil Check Valve
The oil check valve helps reduce reverse oil movement towards the connected refrigeration circuit when the pump stops.
How the Two-Stage Design Works
The RD2D uses two rotary vane pumping sections connected in series.
The first stage removes most of the air from the refrigeration circuit and reduces the pressure substantially below atmospheric pressure.
The second stage receives the exhaust from the first stage and compresses the remaining gas further before discharging it from the pump.
This two-stage arrangement allows the RD2D to achieve deeper vacuum than a comparable single-stage refrigeration service pump.
Standard Equipment
Thermal protector on single-phase versions
On/off switch on single-phase versions
Cable with Schuko plug on single-phase versions
Transport handle
Oil check valve
Anti-vibration shock mounts
Oil Check Valve Protection
When an oil-lubricated vacuum pump stops while connected to an evacuated system, pressure differences can encourage oil or oil vapour to move back towards the vacuum line.
The RD2D oil check valve helps reduce reverse oil movement towards the connected refrigeration or air-conditioning circuit.
Good service practice should still include correct isolation of the system and use of appropriate hoses, valves and manifolds.
Portable Refrigeration Service Pump
The RD2D is designed to be compact enough for mobile service work and installation on portable refrigeration equipment.
Its lightweight alloy construction reduces handling weight, while the transport handle makes the pump easier to carry between service locations.
Shock mounts help reduce transmitted vibration when the pump is placed on a workshop floor, bench or mobile service unit.
The pump should remain upright during operation and be positioned where cooling airflow is not restricted.
Using the RD2D Effectively
The effective evacuation speed at the refrigeration system depends on more than the nominal capacity of the pump.
Long or narrow hoses, restrictive manifold passages, valve-core restrictions and leaks can significantly reduce the pumping speed reaching the system.
Using short, correctly sized vacuum hoses and removing unnecessary restrictions can help reduce evacuation time.
A suitable vacuum gauge should be connected at the system rather than relying solely on the pump connection or manifold gauge.
The system should also be isolated and monitored after evacuation to help identify moisture release or leakage.
Vacuum Pump Oil and Maintenance
Oil condition is important to the ultimate pressure and reliability of the RD2D.
The oil lubricates the pumping mechanism, helps seal internal clearances and transfers heat away from the rotary vane assembly.
Moisture, refrigerant, dirt or degraded oil can reduce pumping performance and prevent the pump from reaching its expected final pressure.
Oil should be checked regularly and changed according to use, contamination level and the maintenance instructions.
Vacuum Pumps UK and our sister company, VacAir Superstore, can provide oil, seals, gaskets, service parts and workshop support for the DVP RD2D.
Is the RD2D the Correct Refrigeration Pump?
Small System Volume
The compact 1.8 m³/h pumping speed is best suited to relatively small refrigeration and air-conditioning circuits.
Portable Service Work
The lightweight design and transport handle make the RD2D suitable for engineers carrying a pump between service locations.
Deep Evacuation
The two-stage construction provides deeper vacuum than a typical single-stage service pump.
Larger Systems
Larger refrigeration circuits or faster evacuation requirements may need a pump with greater nominal pumping capacity.
Need Help Selecting a Refrigeration Vacuum Pump?
The required pumping speed depends on the system volume, evacuation target, hose arrangement, service environment and desired pump-down time.
Send us details of the refrigeration or air-conditioning system and we will advise whether the compact DVP RD2D is suitable.
Send us the pump details and information about the application.
Oil, Service Parts and Support
Vacuum Pump Oil
Correct vacuum pump oil supports lubrication, internal sealing, cooling and final-pressure performance.
Seals and Gaskets
Replacement seals, gaskets and service components are available for planned maintenance and repair.
Oil Check Valve Support
Valve condition should be checked if oil migration, vacuum loss or poor isolation is suspected.
Workshop Support
Inspection and repair support is available through our sister company, VacAir Superstore, one of the UK’s leading independent vacuum pump service specialists.
DVP RD2D Frequently Asked Questions
What type of pump is the DVP RD2D?
The RD2D is a compact two-stage oil-lubricated rotary vane vacuum pump designed for refrigeration and air-conditioning service.
What pumping capacity does the RD2D provide?
The pump provides 1.8 m³/h at 50Hz and 2 m³/h at 60Hz.
What ultimate pressure can the RD2D achieve?
The current DVP specification states an ultimate pressure of less than 0.5 mbar absolute.
What motor power does the RD2D use?
The listed motor power is 0.12 kW at 50Hz and 0.15 kW at 60Hz.
Is the RD2D a two-stage vacuum pump?
Yes. It uses two pumping stages connected in series to achieve deeper vacuum than a comparable single-stage pump.
Is the RD2D suitable for air-conditioning installation?
Yes. It is designed for evacuating residential and automotive air-conditioning systems before charging or servicing.
Can the RD2D be used for refrigeration systems?
Yes. It is suitable for small refrigeration systems, mobile service equipment and similar refrigeration applications.
Why must moisture be removed from a refrigeration system?
Moisture can freeze at restrictions, react with refrigerant and oil, contribute to acid formation and reduce system reliability.
What does the oil check valve do?
The oil check valve helps reduce reverse oil movement towards the connected refrigeration circuit when the pump stops.
Is the RD2D portable?
Yes. It uses lightweight alloy construction and includes a transport handle.
Does the RD2D include anti-vibration mounts?
Yes. Shock mounts are fitted to help reduce transmitted vibration.
Does the single-phase version include a switch?
Yes. Single-phase versions are listed with an on/off switch, thermal protector and cable with Schuko plug.
Is the Schuko plug suitable for a standard UK socket?
A Schuko plug is a continental European plug and may require an appropriate UK connection arrangement. Electrical work should be completed by a competent person.
Does the RD2D require routine oil changes?
Yes. Oil condition affects lubrication, sealing and ultimate-pressure performance and should be checked regularly.
Why might the pump not achieve its expected vacuum?
Possible causes include contaminated oil, system leaks, restrictive hoses, open valves, moisture release, internal wear or an unsuitable vacuum gauge arrangement.
Can the RD2D evacuate a large commercial system?
Its 1.8 m³/h capacity is primarily suited to smaller systems. Larger circuits or faster evacuation requirements may require a higher-capacity pump.
Can Vacuum Pumps UK repair an RD2D?
Yes. Inspection, servicing and repair support is available through Vacuum Pumps UK and our sister company, VacAir Superstore.
Need a DVP RD2D Refrigeration Vacuum Pump?
Contact Vacuum Pumps UK for RD2D prices, availability, technical advice and refrigeration pump selection.
Send us the refrigeration or air-conditioning system details and we will confirm whether the RD2D is suitable.
