PM type cast iron moisture-proof door (flap door)
purpose
Cast iron moisture-proof doors are used in the outlet pipes of water pumps or flow wells in pump stations to prevent backflow of rivers and lakes.
There are two types of swing doors: circular swing doors and square swing doors, both of which use double hinged chains. It has the characteristics of simple structure and good sealing. The other large working water pressure is 6m head.
Table of reserved hole sizes for product specifications and external dimensions