1. Selection of the action method of diaphragm pump

The method of the diaphragm pump is only available when choosing a pneumatic execution agency. Its action method is formed by the combination of positive and negative effects and the positive and negative effects of the valve. There are 4 combination forms that are positive (Qi Guan type), positive and negative (open type), anyway (open type), and anti -anti -(gas pass). There are two types of openness.

For the choice of the method of diaphragm pump, we mainly consider from three aspects:

(1) Process production safety;

(2) The characteristics of the medium;

(3) Ensure the quality of the product and the smallest economic loss.