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T M 1 0 - 3 8 3 5 - 2 1 9 - 14
2 - 1 0 . U s e o f F l o w C o n t r o l K i t i t e m s . ( f i g u r e 2 - 9)
a. G e n e r a l. The flow control kit includes check valves, gate valves, and an assortment of couplings and
adapters, a pipe tee, a strainer, pipe clamps and two 5-foot (1.5m) hose assemblies. These parts are provided for
use with the hoseline in a variety of situations. The check valves are used on long upgrades. The gate valves can
be used to isolate a roadway or suspension crossing, or direct the fuel flow along the main route or through the
pipe to a branch line. The strainer is installed at the suction end of the pump, to remove any debris before it
damages the pump. The hose assemblies and couplings are used as required, in conjunction with the strainer
and the various valves.
b . Gate Valve. Gate valve can be used to isolate a section of hoseline (such as a suspension or roadway
crossing), to direct fuel flow (by using two gate valves and pipe tee) or as shutoff valves at initial (suction) and
terminal (discharge) ends of hoseline. The gate valves are supplied with flange-to-grooved adapters and are
installed using procedures in operator maintenance chapter.
C A U T I O N
Ensure that check valve is positioned correctly to allow free flow in the direction
desired. Reverse installation will cause flow blockage.
c. Check Valve. Check valve must be installed on hoseline to prevent backflow when pumps are shut down.
Locate check valve at downstream (discharge) end of each pump and near bottom of long upgrades. The check
valves are supplied with grooved coupling faces and can be instaIled, using an additional coupling clamp,
according to procedures in operator maintenance chapter.
d. Pipe Tee. Pipe tee is used for creating takeoff (spur) lines leading away from main hoseline route. The tee
is supplied with grooved ends on all sides and is installed using coupling procedure in operator maintenance
chapter.
e. Strainer. Strainer should be attached to suction end of the pump used with hoseline outfit. A hose
assembly should be connected to pump suction end, and strainer attached between end of hose and fuel source.
N O T E
Cone of strainer should face downstream or point in the direction of flow.
2 - 31
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