By conveying what medium, medium temperature, to determine the choice of what pump, with what material pump. For example, 98% of the concentrated sulfuric acid according to the different temperatures, the chemical properties of the performance is not the same. 30 ℃ can be used below the PVDF material acid and alkali self-priming pump conveyor, more than 30 ℃ need to use fluorine lining material of the pump conveyor. Hypochlorous acid and hypochlorite ions have strong oxidizing properties and need to be pumped by PVDF (magnetic pump is recommended for solutions containing hypochlorite ions).
Self-priming height according to the requirements of different configurations, it is generally recommended that customers add a bottom valve screen in the inlet to prevent sucking debris, to prevent the liquid from flowing back, and then start again without adding water and other roles, the self-priming height of about 5 meters, you need to add a self-priming bucket. (Principle: self-priming pump constantly pumping self-priming bucket of liquid, so that the pressure inside the self-priming bucket is constantly becoming smaller, the atmospheric pressure will be the liquid through the inlet pipe pressure to the self-priming bucket, thus improving the self-priming ability)
The flow head is a basic requirement of the pump, through the pump requirements of the flow head, against the performance of the flow head graph, you can quickly select the appropriate model. For example, need 20m head, flow 20m?/h self-priming pump, in the flow head curve, find the corresponding 20m head of the horizontal line ①, and 20m?/h (334L/min) corresponding to the vertical line ② cross the point X, choose a line immediately above it h, choose the corresponding pump model MA-50052 (using the principle of selecting the large and selecting the small).
If the caliber requirement is 40mm without self-priming requirement, you can also choose magnetic pump MPH-452 (50*40 caliber) or chemical pump TG-40032 (50*40 caliber) according to the above method.