GE X2 Brochure download pdf (Page 12)

These units feature an integral discharge jet plenum design, allowing cool, atmospheric air to flow

into the casing. This unique design permits continuous operation at high vacuum levels (up to blank-off)

with a single stage unit. In the case of Roots DPJ blowers, high pressure discharge air is cooled before

injecting into the jet plenum.

Headplates and the rigid casing are cast from grey iron, with aluminum drive end and gear covers.

Carburized ground alloy steel spur timing gears are securely mounted on taper end shafts. These units

are designed with detachable steel mounting feet to permit adaptability to high pressure discharge left,

right or vertically upwards.

DVJ and DPJ Rotary Positive Displacement Blowers

2504 DVJ WHISPAIR Vacuum Blower

Frame Size 2504 DVJ

This unit features ball bearings, lip seals, splash lubrication at the gear end and

grease lubrication at the drive end.

RAM DVJ Vacuum Blower

Frame Sizes 406 DVJ, 412 DVJ and 616DVJ

RAM DVJ units feature integral-shaft ductile iron impellers with involute profiles.

The top shaft is extended for side outlet blowers, and either left or right shaft can

be extended for top or bottom outlet blowers. RAM DVJ units feature cylindrical

roller bearings for maximum life. Piston ring shaft seals reduce gas leakage through

the headplates, while lip-type oil seals maintain proper oil levels in the bearings.

The units are splash lubricated on both sides with high volume oil reservoirs. They

can be equipped with mechanical seals for gas applications. Please contact us for

more information on gas applications.

721 DVJ WHISPAIR Vacuum Blower

Frame Size 721 DVJ

This unit has the same durable features as the RAM DVJ blowers. However, is not

currently configured for gas applications.

RAM 406 DPJ Dry High-Pressure Blower

Frame Size 406 DPJ

In this unit, the WHISPAIR jets control pressure equalization by feeding cooled

discharge air in the direction of impeller movement, thereby aiding rotation. Cooled

discharge air is mixed with incoming air to control temperature rise. This design

permits continuous operation with discharge pressures up to 30 PSIG in a single

stage unit. RAM DPJ units feature cylindrical roller bearings and is splash

lubricated at both the gear and drive ends. Piston rings are used to reduce air

leakage through the headplate shaft openings, while lip-type oil seals maintain

proper oil levels in the bearings. The top shaft is extended for side outlet blowers,

and either left or right shaft can be extended for top outlet blowers. RAM DPJ units

can be equipped with mechanical seals for gas application. Please contact us for

more information on gas applications.

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GE X2 Brochure Page 12