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3. Foot Valve Installation
A weight is provided to hold the tubing and foot valve in a vertical position at the bottom of the tank.
Do not allow the foot valve to lay horizontally in the chemical container.
This defeats the action
of the valve and causes the pump to lose prime. Keep suction tubing reasonably short and avoid high
spots or bends.
4.
Wall
Mounting
The fluid end portion (head assembly) of the pump is set up to accommodate mounting of the pump
to the chemical container, either as a flooded suction, or a suction lift. The pump head must be kept
in a vertical position for proper operation. The head can be removed and rotated 90
o
if needed to
keep the inlet and outlet valves in a vertical position.
5. Injection Valve Installation
The injection valve is designed to prevent a back flow and to inject chemical into the line. To work
properly, this valve must be mounted within 45 degrees of vertical. One end of the injection valve is
1/2” MNPT. Install this end into the piping system. Use Teflon tape on this fitting only. Connect the
pump’s discharge tubing to the opposite end of the injector.
NOTE: When installation is made into a
line with zero pressure or when
pumping into an open vessel, use
our optional three function valve
for positive back pressure and
anti-syphon injection valve.
6. Optional Three Function Valve
The optional 3-function valve injection assembly provides three functions in one injection valve
assembly.
Anti-siphon
feature allows metering of liquids “down hill” or into the suction side of a circulating pump.
It provides protection against an accidental application of suction pressure at the fluid injection point.
Its Teflon coated diaphragm provides a positive anti-siphon action.
Back pressure
function permits metering into atmospheric discharge (open container) without over
pumping.
Line check
to permit the removal of discharge tubing without release of system fluid from the pipe
that the injection valve is threaded into.
7. Priming/Degassing Valve Connection
Connect the clear poly tubing to the outlet of the bleed or priming valve. Position the free end of this
tube in the chemical container, above the fluid level. This unique valve allows for the release of trapped
air from the pump head when opened. Open valve all the way to quickly prime the pump, close it
when primed. The valve can work as a degassing valve when the valve is left open approximately 1
turn.
