…Supplying a World Under Pressure

VACUUM PUMP OPTIONS: WHICH TYPE OF PUMP IS BEST FOR YOU?

VACUUM PUMP SELECTION CRITERIA

ROTARY VANE: VANE PUMPS ARE OIL SEALED PUMPS USED FOR PUMPING CLEAN, DRY, NON-REACTIVE GASES. THEY CANNOT HANDLE ANY LIQUID SLUGS. THE PRACTICAL VACUUM LIMITATION IS ABOUT 5 X 10-4 TORR( 2 STAGE) and .5 TORR FOR SINGLE STAGE. THESE PUMPS ARE USUALLY AIR COOLED, DIRECT DRIVEN AT 1750 RPM, AND HAVE A SMALL FOOTPRINT FOR SPACE SAVINGS. RELIABILITY IS EXCELLENT WITH REGULAR OIL CHANGES AND PERIODIC VANE/FILTER CHANGES REQUIRED. PRICING IS VERY MODERATE GIVEN THE VACUUM THEY PRODUCE.

LIQUID RING: THESE PUMPS ARE USED FOR MODERATE TO HEAVY VAPOR LOAD CONDITIONS. A LIQUID SEALANT IS USED WITH OPERATIONAL VACUUM LIMITED TO ABOUT 30 TORR WITH WATER. HIGHER VACUUM IS ATTAINABLE WITH THE USE OF OIL, GLYCOL, OR OTHER LOW VAPOR PRESSURE FLUID. ULTIMATE VACUUM WILL BE TWICE THE VAPOR PRESSURE OF THE SEALANT. THIS TYPE OF PUMP IS DESIRABLE BECAUSE IT CAN BE SEALED WITH A FLUID COMPATIBLE WITH THE PROCESS GAS/VAPOR THAT WOULD HARM OTHER TYPES OF PUMPS (I. E. : OIL SEALED) AND IS RELATIVELY INEXPENSIVE. RELIABILITY IS HIGH BECAUSE OF ITS SIMPLICITY.

DRY RUNNING: DRY PUMPS ARE IDEAL FOR ANY APPLICATION WHERE OIL CONTAMINATION IS UNDESIRABLE OR UNACCEPTABLE. THEY PRODUCE CLEAN, DRY VACUUM WITH NO REQUIREMENT OF OIL OR WATER; ELIMINATING POLLUTION AND REDUCING ENERGY CONSUMPTION. ULTIMATE VACUUM IS 0.02 TORR WITH LOW VIBRATION AND NOISE LEVELS. PRICING IS HIGH. USED IN BOTH ROUGH AND MEDIUM VACUUM.

ROTARY PISTON: ROTARY PISTON VACUUM PUMPS ARE INDUSTRIAL GRADE HEAVY DUTY PUMPS MADE TO OPERATE IN A VACUUM RANGE OF 50 TO .01 TORR. SUCH PUMPS ARE USED WHERE CONTAMINANTS (BOTH LIQUID AND PARTICULATE) ARE HIGH AND MUST BE HANDLED BY THE PUMP. RELIABILITY IS MODERATELY HIGH GIVEN THE ABUSE THESE PUMPS ARE SUBJECTED TO. PRICING REFLECTS THE PERFORMANCE OF THESE PUMPS AS HIGH VACUUM PRODUCERS WHILE ALSO BEING ABLE TO HANDLE LARGE AMOUNTS OF CONTAMINANTS.

VACUUM BOOSTERS: ROTARY LOBE “ROOTS” VACUUM BOOSTERS ARE USED TO EXTEND THE VACUUM LEVEL AND/OR THE PUMPING CAPACITY OF THE VACUUM PUMP BY A FACTOR OF 2-10. THE BOOSTERS ARE GAS ACCELERATORS WHICH INCREASE THE FLOW OF GAS BEING FED TO THE VACUUM PUMP, THEREFORE INCREASING THE CAPACITY OF THE EXISTING VACUUM EQUIPMENT. BOOSTER PRICING IS EXTREMELY MODERATE.

… So What’s Your Torr?

CACEJEN VACUUM, INC. 41083 Sandalwood Circle Suite D, Murietta CA 92592, O 951.698.3356 C 951.240.6147 WWW.CACEJEN.COM