5
fillrite.com | tuthill.com
INSTALLATION AND OPERATION MANUAL
Bung Adapter / Suction Pipe Assembly and Installation
FR300V series pumps feature a 2" Bung Adapter with integral connection for an anti-
siphon device. When installing the suction pipe into the bung adapter, the suction pipe
must be inserted into the bung adapter correctly for proper operation. The suction pipe
threads into the tank adapter, and must be cut to a length that positions it at least 3"
from the bottom of the tank.
1. Measure and cut suction pipe to fit as described above.
2. Examine the bung adapter to determine top and bottom for proper insertion of the
suction pipe. The bung adapter is labeled to help: the end marked “PUMP SIDE” is
the top of the bung adapter. Note that the internal threads for the suction pipe are
at the TOP of the opening.
3. Wrap the threads of the suction pipe with the appropriate sealant for the fluid being
pumped. Insert the suction pipe (with the threaded side up) into the bottom of the
bung adapter until the threads engage.
4. Tighten the suction tube into the bung adapter to create an air / fluid tight seal.
5. Apply an anti-seize thread compound to the external threads on the bottom of the
bung adapter. Install the assembled bung adapter and suction pipe into the bung
opening on the tank. Tighten to a fluid / air tight seal.
6. Install pump onto bung adapter using appropriate fluid sealant, and tighten
to a fluid / air tight seal.
Anti-Siphon Device
Your FR300V series pump comes from the factory ready to install an anti-siphon tube back to the tank.
An anti-siphon device (a.k.a. vacuum breaker) is important because it will break a liquid siphon
if there is an open nozzle or a leaking hose below the fluid level in the tank when the pump is turned off.
Fill-Rite recommends anti-siphon kit # KIT700AS be installed from the pump outlet back to the
vapor space in the tank.
This illustration shows where to install the tube so that it terminates in the vapor space at the top of the
tank. The tube must terminate in the vapor space; if it terminates below the fluid level in the tank, it will
not prevent siphoning. It is very important there are no liquid traps in the tubing; it must have a continuous
slope from the pump down to the tank, and can be connected into any opening in the top of the tank if the
tank adapter is not used. Use reducer bushings as required for proper fit and seal.
The ¼ NPT opening in the side of the tank adapter terminates in the vapor space of the tank. Make liquid-
tight connections using the appropriate sealant from the adapter to the anti-siphon outlet using a minimum
of 1/4 metal tubing that is compatible with whatever liquid is being pumped. If the anti-siphon tank adapter
is being used and the ¼ NPT opening is not used for the tubing, leave the factory installed plug in place.
Fill-Rite offers Anti-Siphon kit # KIT700AS (available through your Fill-Rite distributor). This kit contains
the necessary fittings and tubing to complete the installation as pictured in this section. NOTE: This kit
ONLY works for tank top installations.
If not using the KIT700AS, you will need the KIT700AVB. This will allow you to connect a line either back to
the tank, or to the bung adapter.
CAUTION!
Threaded pipe joints and connections should be sealed with the appropriate sealant or sealant tape to minimize the possibility of leaks.
Nozzle Boot Installation
The nozzle boot is installed using the lower two screw holes on the side of the boot.
Use supplied attaching hardware to install the nozzle boot.
When the nozzle is mounted correctly it will be in a horizontal position.
TANK ADAPTER
SKID TANK
ANTI-SIPHON LINE
TOP
1 1/4" SUCTION PIPE
USE TWO LOWER HOLES IN
NOZZLE BOOT FOR MOUNTING
NOZZLE BOOT
NOZZLE BOOT BRACKET
