Metering pump head selection is very simple, you need to integrate three indicators to make their own judgments, then what are the three factors, Yu machinery small Xiaobian for you to answer?

First, confirm the degree of corrosiveness of the liquid

First is to confirm the degree of corrosion of this liquid, if it is a neutral substance, you can use the general pump head, such as PVC, PP this kind of material is cheaper, if the acid base is relatively strong, you can use PVDF pump head, if the oxidation is relatively strong, you can choose stainless steel pump head

Two, confirm the temperature

Followed by temperature, high temperature, plastic generally can not meet the requirements, the need for stainless steel, but not more than 120 degrees Celsius, if the temperature is too high, it is recommended not to use metering pumps

Three, to confirm the viscosity

Then the viscosity, high viscosity of the material also does not recommend the use of plastic pump head, because it is not easy to clean stainless steel

Selection of metering pump head important to consider the material problems, general selection of metering pump head general material: PP, PVC, PTFE and SS316.PP: easy molding, low cost, and the acid and alkali resistant capacity; but it is not suitable for organic solvent, strong acid and liquid containing hypochlorite. The concentration is limited. PVC: easy molding, low cost, acid and alkali, but not suitable for organic solvent, strong acid and higher than 40 DEG C measurement of liquid, not suitable for food and drinking water industry, toxic, food packaging bag bag is no longer used PVC.PTFE: suitable for all kinds of medium and high temperature, but the forming difficulty, high cost; SS316 suitable for: organic solvent and high temperature liquid, but not resistant to acid.

It is suggested that users can regularly maintain the metering pump, that is, regular use of water to hit, increase the service life of metering pump