AIR CYLINDER CONTROL SYSTEM
Six air cylinders control suction loading and spray bar
discharge. Each of four spray heads is controlled by a
single cylinder. The fifth cylinder controls gravity feed
to the lower spray bar. The final cylinder connects
pump inlet to either the tank or suction hose (for
pressure fed delivery or suction loading, respectively).
Each of the six cylinders is controlled by a two way
valve in the air cylinder control panel. Supply tubes
from the valves run to the water distributor through a
flexible plastic conduit. The conduit terminates at quick
disconnects near the manhole.
From the manhole, piping runs under a protective
plate. The six air cylinder tubes, and a brake line,
emerge from the plate at the back of the tank. From
there, each tube is routed to the appropriate cylinder.
Tubes, air cylinder (6).
Air cylinder, gravity spray.
Air cylinder, suction load.
Air cylinder, lower right spray head.
Air cylinder, upper right spray head.
Air cylinder, lower left spray head.
Air cylinder, upper left spray head.