Edwards RV Oil Sealed Vacuum Rotary Vane Pumps are based on over 75 years of experience and a new design program to produce the ultimate range of small oil sealed rotary vane pumps. These rugged vacuum pumps RV3/RV5/RV8/RV12 offer extreme performance with good pumping speed, excellent steam handling and quiet operation. Edwards RV series

Features and Benefits of Edwards Vacuum Pump RV Series:

Gas Ballast: Dual-position gas ballast can handle 60 g/hr water vapor, or 220 g/hr (290 g/hr on RV12) water vapor higher than comparable products. The dual-position gas ballast is used in combination with the oil return attachment and oil mist filter for continuous pumping without reducing lubrication. After installing the optional electromagnetically operated gas ballast valve, the gas ballast can work automatically.

Motor: A single general purpose motor covers a wide range of voltages and frequencies. The single-phase motors have an external switch that can be adjusted from the high voltage range (220-240v) to the low voltage range (110-120v. General purpose three-phase motors are also available on all models, for special applications we can supply ATEX certified explosion proof motors Pump.

Inlet: first-class anti-reverse flow protection

The opening state is stably controlled by oil pressure, thereby eliminating pressure fluctuations

Quick shutdown within 0.4 seconds of pump being stopped due to dump valve

All Edwards RV pumps come with inlet seals and integrated inlet screen filter

Vacuum Pump Oil: Edwards RV pumps are initially loaded with Ultragrade No. 19 oil. This premium oil is specially formulated with a range of unique additives to provide vacuum performance higher than any other mineral oil. Because of this, it provides a very tightly controlled vapor pressure and is extremely resistant to oxidation for a long service life. For oxygen-enriched applications, we also offer pumps with PFPE. For pumps with PFPE, Fomblin must be purchased separately.

Designed for easy maintenance:

·One size hex wrench to remove all parts

All parts are self-aligning, so no standoffs or special components are required

·Polymer inserts without springs or pins for easier assembly and higher reliability

·The shaft seal can be replaced on the motor side without disassembling the pump mechanism

There is no О-ring between the slices, which is easier to assemble

All parts are interchangeable so they can be ordered separately

Mode switch: Unique patented mode selector switch technology makes one pump suitable for multiple purposes, so you only need one model for high pumping capacity and high vacuum applications. In high pumping mode, the selector switch will increase oil flow to the high vacuum stage, allowing the pump to run continuously at high inlet pressures without any wear or loss of lubrication.

Edward vacuum pump RV series vacuum pump is widely used in:

1. Lighting industry;

2. Color picture tube industry; conductive glass; display manufacturers;

3. Refrigeration industry;

4. Electrical industry: major power plants; transformer production plants;

5. Vacuum treatment industry (vacuum heat treatment);

6. Vacuum packaging; vacuum forming; vacuum forming industry;

7. Coating industry;

8. Freeze drying;

9. Vacuum pre-cooling; vacuum preservation industry;

10. Analytical instrument industry;

11. Research and development fields: such as the Department of Physics; Department of Chemistry; Department of Materials; Department of Telecommunications, etc.;

12. Semiconductor industry; solar energy industry;

13. Printing industry;

14. Medical industry;

15. Central vacuum system;

16. Wood processing;

17. Ceramic tile manufacturing;

18. Environmental engineering;

19. Sewage treatment and other industries.

The high gas ballast of the RV pump allows for higher oxygen flow rates while maintaining dilution below the lower explosive limit. When used with the optional oil recovery kit to prevent gas ballast from blowing all the oil into the exhaust, and when used with a PFPE-equipped pump to avoid oil oxidation, the RV pump is a reliable pump for pumping oxygen. Again, these properties make RV pumps suitable for pumping other oxidants such as halogens and halogenated compounds. Fire/explosion is not a problem with these compounds, but gas ballast can still be used for dilution to protect oil and bearings. PFPE should be used to prolong the life of the oil.