Then put through the power and the pump begins to work. If the machine need to work for a long time, the temperature of the tank water will rise effecting the vacuum degree.
At this time, connect the drain hose with tap water and drain water from the water outlet. You need to control the amount of the tap water so as to keep the temperature of the constant and the vacuum degree stable. The item "UsedLab Multi-Purpose Water Circulating Vacuum Pump 110V 15L Air Lab Instruments" is in sale since Tuesday, March 16, 2021. This item is in the category "Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Pumps & Pump Accessories\Other Pumps". The seller is "eezglobal" and is located in Rancho Cucamonga, California.This item can be shipped to United States.