Hydropneumatic anti-belier tank with air intake and regulation device, air intake method
FR2524033A1
Pressurised system for low head water transfer - uses stop valve at bottom of conduit, controlled by electrical signals derived from water level in supply source
EP0003700A1
Desurging tank with automatic air control
FR2213920A1
Fertiliser contg. coal and asphalt - is used with ammoniacal compsns for increasing vegetation ie grain or fruit
