Plastic profiles and pipes: PVM and PVN series all liquid ring vacuum pumps are suitable.
Suction gas while warming: PVM 115 series pumps are generally used for this application. Air and gas ( if the material is PVC ) must be sucked while plastic is warming in front of the extruders
Calibration: Different type of liquid ring vacuum pumps can be used for calibration tanks to suck air and water alittle. The liquid in tanks for cooling the warmed plastic but some of them is sucked by vacuum. These types can be used :
1- PVM 130/065 and PVN 210/040 types are enough for dropped irrigation pipes.
2- PVN 210 , PVN 220 ve PVN 270 type pumps are used for window profiles and pipes. Nowadays, our PVM 150 series pumps are used instead of PVN 210 and PVN 230 series pumps. The PVM pumps contain lower volume on the machines and they are cheaper.
If sucked water from the calibration tank is so much, the motor of the liquid ring vacuum pump needs more energy. When the amperage increases, the pump stops often or electric motor is burned. POM-VAK has just designed and manufactured a new liquid ring vacuum pump equals to PVN 220/090 type for such this application. This is brand new so it is not seen in our catalogues now. Please ask us if you need for that application.
Our double stage and single stage pumps are used for central vacuum systems. Our oil ring vacuum systems are also suitable for that.
Shaping with vacuum: Oil-sealed rotary vane vacuum pumps are suitable. The deeper pressure is need for shaping. Dry air should be sucked from each corner. That’s why oil-sealed rotary vane vacuum pumps are suitable for this application. These pumps are also used for pvc coating. Liquid ring vacuum pumps can be used for acrilic shaping like washbasin and sink.
Packaging: Oil-sealed rotary vane vacuum pumps are used for vacuumed food packaging. The pumps are also used for continuous systems like thermoforming.