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Component Differences Review
120 VAC Syrup Solenoid Valve
When the solenoid is energized with 120VAC, the valve coil generates a magnetic field which will pull the steel
plunger with a rubber seal tip away from the internal housing and allows the syrup to flow past the solenoid. Once
the valve coil is de-energized, the compressed spring in the internal housing will push the steel plunger back into its
original closed position.
Note: The syrup valve housing inlet and outlet holes are not marked on the base. The side with two screw mounting
holes is the syrup inlet and the direct opposite side (180°) is the syrup outlet.
Inlet
120 VAC Water Solenoid Valve
When the solenoid is energized with 120VAC, the valve coil generates a magnetic field which
will pull the steel plunger with a rubber seal tip away from the internal housing and allows the
water to flow past the solenoid. Once the valve coil is de-energized, the compressed spring in
the internal housing will push the steel plunger back into its original closed position.
Pressure Switch
The pressure switch is mounted to the syrup valve base and is a type of switch that makes electrical
contact when a certain set pressure has been reached on its inputs. The switch is designed to make
electrical contact when pressure reaches 30 psi and will lose contact when pressure is below 21 psi.
The switch is wired normally in an open position. The syrup pressure switch detects when there is not
enough psi present and will shut off the electrical supply going to the 120VAC syrup and water solenoid
valves. This will prevent incorrect dispense ratios into product hoppers.
Syrup Constant Flow Valve with Orifice
The syrup constant flow valve (CF Valve) is a device that is constructed with an inter-
nal spring that is designed to open at a continuous fluid or air pressure. The pressure
is evenly balanced within the valve body and keeps the valve in an open position
while the product flow is being controlled by a flow orifice located on the outlet side
of the CF valve. The hole size in the flow orifice on the product side sets a constant
product flow rate. Anytime the source pump pressure drops below 21 psi, the pressure
switch will de-energize the syrup and water solenoid valves first and once the syrup
line reaches a point of 12 psi, the CF valve's internal spring will retract and close off
the flow path internally within the CF valve.
Water Constant Flow Valve
The water constant flow valve (CF Valve) is a device that is constructed with an internal
spring that is designed to open at a continuous fluid or air pressure. The water CF valve
has a water screw adjustment valve that is used to increase or decrease water flow.
The pressure is evenly balanced within the valve body and keeps the valve in an open
position. Anytime the source pump pressure drops below 21 psi, the pressure switch will
de-energize the syrup and water solenoid valves first and once the water line reaches a
point of 12 psi, the CF valve's internal spring will retract and close off the flow path inter-
nally within the CF valve. Unlike the syrup CF valve, the water CF valve does not have a
flow orifice.
6
Ultra Training Manual
Outlet
Pressure
Switch Port
Orifice
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