Varian (Agilent) DS Series 949-9392 NW25 Exhaust Filter

Price is for one Varian 949-9392 NW25 exhaust filtern intended for use with DS 602 vacuum pumps.

The Varian DS Series NW 25 oil exhaust filter uses a high efficiency oil separating cartridge to purify the exhaust gas from oil or other liquid aerosols.

The oil mist is filtered by the cartridge where it transforms into drops. The drops deposit on the carter bottom for the gravity effect. The cartridge also filters the solid particles from the gas. These particles are the main cause of the cartridge clog.

To avoid that the pressure before the filtering element increases so that the pump does not work properly, an overpressure device is provided that intervenes when the pressure reaches the 1 bar value. When the cartridge is obstructed and the security system is operating, the oil mist is dragged by the gas flux from the pump directly to the external ambient. Before the cartridge is completely obstructed, it is advisable to change it on a regular basis according to the pump application. 

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