The single-stage rotary vane vacuum pump is a standard negative-pressure device widely used across traditional industrial fields, and basic operation rules matter a lot for all end users. The single-stage rotary vane vacuum pump removes inner air through rotating vanes inside pump chamber. Operators need to fill dedicated vacuum pump oil before startup, with 6L oil for 4/6.6kW model and 8L for larger-power versions. Working ambient temperature should stay between 0℃ and 40℃, and inlet air temperature follows clear limits: under 50mbar pressure, inlet temperature can not exceed 150℃ while the limit drops to 80℃ above 50mbar. Expanding demands from plastic processing and food packaging industries keep lifting market orders of this pump, and fluctuating prices of base lubricant oil change the overall production cost gradually.
Lots of buyers mix up single-stage and two-stage vacuum pumps during purchase, and the single-stage rotary vane vacuum pump costs less for purchase and daily maintenance despite weaker ultimate vacuum performance, with 140kg and 190kg as two mainstream body weights listed on parameter sheet. Standard operation steps go in fixed order: check oil level and surrounding temperature first, run pump without load for 3 to 5 minutes to test noise between 70dB(A) and 74dB(A) under EN ISO2151 standard, then connect pipeline for formal work. Manufacturers cut partial production cost recently thanks to falling prices of aluminum and motor raw materials, bringing more price advantages for bulk purchasers from machining and packaging sectors.
