Agilent Technologies / Varian DS 602 Dual Stage Rotary Vane Pump, Three Phase, 9499336

The Agilent Varian DS602 3Ph is a dual-stage, Rotary Vane Pump oil sealed, driven by a three-phase electric motor. The entire pump functional block is immersed in the oil contained in the casing. The oil guarantees perfect sealing of the discharge valves, enters the pump to ensure lubrication and sealing of the parts inside, facilitates heat dissipation and reduces pump noise. The pump is equipped with a special anti-suckback device which automatically isolates the vacuum system when the pump stops. This avoids rises in pressure or oil flow in the vacuum system while air is allowed back into the stator chambers. The air entering the pump after the anti-suckback device has closed prevents the oil in the casing from filling the stator chambers. The inner seals are achieved by the lubricating oil, thanks to the close machining tolerances.