Low vacuum level

Reply 1# *angyu0619: Is the intake valve set too low, or is there really a leak?

Reply to 1# *angyu0619: Water ring pumps (SK, SZ, 2SK, etc.) use the high-speed rotation of the impeller inside the pump body to turn the water drawn in into a water ring, which in turn helps to expel the air from within the pump body, thereby creating a vacuum. Water ring pumps are the cheapest and most widely used type of pump; they are simple to assemble and have a straightforward structure. Water is separated from the components using barley paper pads, which means their lifespan isn’t very long – a pump that lasts two years is already considered good. Reciprocating pumps (W3, W4, etc.) operate on the principle of pistons: piston rings are inserted into the pistons, which are then placed inside cylinders. These pistons are driven back and forth by crosshead links, with belt drives in use. The mechanism is similar to that of a tractor engine, and even the way they function is similar. The back-and-forth movement of the pistons creates a vacuum inside the cylinders. However, like tractors, these pumps also produce exhaust gases and consume a lot of fuel. I haven’t used any other types of pumps yet, so I’m not very familiar with them

Check whether there is too little or too much seal water in the pump. Our factory originally used vacuum condensate as the seal water, but the vacuum pump kept suffering from cavitation; thereafter we switched to deionized water, and now the vacuum performance is excellent