2025 NVE Challenger 304 Vacuum Pump

Feature and Benefits
Exclusive NVE automatic oil pump
Rugged braided stainless steel oil delivery lines
Ductile iron housing
On truck serviceability
Remote mount 5 quart see through oil tank for constant oil level monitoring
Available in both clockwise and counter-clockwise rotation
Two year warranty against manufacturer defect
Designed, built, and supported in the USA

* The maximum allowable operating vacuum will vary depending on R.P.M., ambient temperature, altitude and time running. The basic principle to keep in mind is – faster R.P.M., higher air temperature and longer run time all equal more heat in pump. When installing an NVE 304 pump we recommend a normal R.P.M. of 1200-1400.
SPECIFICATIONS 304 VACUUM PUMP
Maximum Airflow 210 CFM
*Full vacuum 18 “ Hg
Maximum pressure 20 psi
*Operating Range - RPM 1200 - 1300 - 1400
Hp required @ Full Vacuum 8.35 - 9.24 - 10.16
Hp required @ 10 psi 10.08 - 11.14 - 12.24
Porting size 2”
Shaft size (3/8” key) 1 1/4”
Pump dimension L 21 5/16” W 9 3/8” H 15 7/8”
Approximate weight 179 lbs

304 PUMP STAND COMPLETE
304 counter clockwise vacuum pump
Gearbox or hydraulic adapter options
Pre-filter
Heavy duty 3/8” steel gusseted frame
Durable powder coat finish
Lightweight aluminum gearbox for cool operation
Diesel flush kit included
Reliable E5 coupler
Remote mount 5 quart see through oil tank for constant oil level monitoring
Two year warranty against manufacturer defect
L 33 3/4” W 11 7/8” H 17 3/4”



304 COMBO PACKAGE
304 counter clockwise vacuum pump and stand
Gearbox or hydraulic adapter options
Combination moisture trap and muffler
Vacuum and pressure relief valves with gauge
Diesel flush kit included
Right or left mounting options
Two year warranty against manufacturer defect
L 22” W 23” H 17 3/4”

304 HORIZONTAL PACKAGE
304 counter clockwise vacuum pump and stand
Gearbox or hydraulic adapter options available
Pre-filter
Horizontal moisture trap
Diesel flush kit included
Vacuum relief valve and vacuum pressure gauge
Two year warranty against manufacturer defect
L 33 3/4” W 23 7/ 16” H 17 3/4”



304 ENGINE DRIVE PACKAGE
304 counter clockwise vacuum pump and stand
Honda 13 HP electric start motor
Battery included
Two year warranty against manufacturer defect
L 23 9/ 16” W 34 15/ 16” H 15 7/8”