U4.400, U4.630

The Becker U4.400-U4.630 se ries comprises 2 models, each available in two versions: the SA series for general industrial vacuum applications, and the F series, for applications where higher vacuum levels are needed. They are highly efficient oil-flooded ro ta ry vane designs that incorporate an oil reservoir, multi-stage oil separation system, radiator-style oil-cooler, anti-suckback valve, vibration isolators, and high-efficiency direct-drive motor as standard equipment.

Each pump is de signed to op er ate on a con tin u ous ba sis, and can be operated with its inlet blanked off. The SA series models have an ultimate pressure of 29.83 n. HgV (2 torr), and are intended for use at
vacuum levels above approximately 20 in. HgV (below 250 torr), but can be operated at any vacuum level, depending on conditions.

The F se ries pumps are best for use when the absolute operating pressure is above 28 in. HgV (below 50 torr). They have an ul ti mate
pres sure of 29.9 in. Hg. (0.4 torr).