Water mains cleaner, using sudden pressure drop - has common magnetic control valve in front of branch supply pipe

摘要

The water mains cleaner uses a branch pipe (26,27) in each user's (1,2..) supply line (9,10). A solenoid stop valve (B1, B2) controls water flow through the branch pipe to a drain. A central solenoid stop valve (A) controls water flow in the main (20) supplying all users. The central valve is normally open, and branch valves are noramlly shut. A central controller (30) shuts the central valve and opens the branch valves and vice versa, in a series of cycles, thus releasing known quantities of water and producing pressure drop to clean the drinking, or service water system. ADVANTAGE - Simple application to system with individual water meters.