HyVac RP, rocking piston, pumps are oil free modern, continuous duty, medium vacuum pumps featuring a clean, functional design, which provides high performance.  They are portable and quiet.  They are suitable for work to 28" of mercury vacuum.  They are a good choice for vacuum filtering or other applications where water contamination may be a problem.  The diaphragms are replaceable and chemically resistant configurations are available to deal with other types of contaminated vacuum applications.  They are oil free pumps and can be considered for continuous (24/7) duty.  Pumps listed are 115V/60Hz.  Other electrical configurations are available including 220V power options and 50Hz operation.

97000-110 PressoVac RP 70 Vacuum Pump Ultimate vacuum is 28 inches of mercury vacuum and pump has a free air flow capacity of 70 liters per minute (2.5 CFM).  The are pump weighs 15.5 lbs. and measure 8"W x 5.5"H x 9.25"L. 1/3 HP motor and 1/4" FNPT ports. 

97000-115 PressoVac RP 125 Vacuum Pump Ultimate vacuum is 28 inches of mercury vacuum and pump has a free air flow capacity of 125 liters per minute (4.4 CFM).  The are pump weighs 16.0 lbs. and measure 8"W x 5.5"H x 9.25"L. 1/3 HP motor and 1/4" FNPT ports. 

97000-120 PressoVac RP 155 Vacuum Pump Ultimate vacuum is 28 inches of mercury vacuum and pump has a free air flow capacity of 155 liters per minute (5.4 CFM).  The are pump weighs 16.0 lbs. and measure 8"W x 5.5"H x 9.25"L. 1/3 HP motor and 1/4" FNPT ports.