2504 DVJ WHISPAIR™ Positive Displacement Blowers

ROOTS™ DVJ WHISPAIR™ dry vacuum blowers have an exclusive discharge jet plenum design which allows cool, atmospheric air to flow into the cylinder. This unique design permits continuous operation at vacuum levels to 20" HgV with a single stage unit.

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Features

Rigid cast iron cylinder and headplates
Anti-friction ball bearings
Splash lubricated spur timing gears
Inlet and discharge connections in standard pipe sizes
Involute profile ductile iron impellers

Engineering Resources

Engineering resources:
Vacuum curves: dvjwhispairmax_drwg_vcurve_imp.pdf,
Dimension drawings: dvjwhispairmax_drwg_dimensions_imp.pdf,
Assembly drawings: dvjwhispairmax_drwg_assembly.pdf,
parts lists: dvjwhispairmax_tab_partslist.pdf

Warranty

gts_5001_020107.pdf

Operating Principle

Incoming air is trapped between the impellers. Simultaneously, pressurized air is being discharged. As the upper impeller passes the jet plenum, cooled, pressurized air flows into the space between the impeller and cylinder. This cools the trapped air, helps control thermal growth and allows higher discharge pressures.The trapped air is then moved into the discharge flange (left). Backflow is reduced, resulting in lower operating noise level and reduced shock loading on the impellers.

dvj_princ_op.pdf

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