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UF-1 and UFB-1 Valves Training Manual
© 1999-2005, IMI Cornelius, Inc. - 5 -
SYSTEM DETAILS
1. WATER
1.1 Water Quality
Water quality issues have an affect on dispensing valves. Chloramine, a combination of
chlorine and ammonia is responsible for some degradation of rubber components.
Chloramine is used in many U. S. water supplies. Its affects can be minimized by install-
ing and maintaining a water filtration system.
Ultra pure water affects the sensitivity of the Optifill™ valve. Because ultra pure water has
less mineral content, it reduces the conductivity of the water keeping the circuit open and
overfilling the beverage container.
1.2 Water Flow
The size of the orifice in the piston varies depending on whether the piston is used for
syrup or water, and whether it is high flow or ultra flow valve.
Note: The notched water piston on the Ultra Flow and UFB-1
valve. results in at least one orifice in the sleeve
always open. This eliminates pulsating and smooths
water flow at higher flow rates.
In operation the liquid flows through the knife–edged orifice in the bottom of the piston
and then out the orifices in the sleeve. The outlet orifice size in the sleeve is regulated by
the position of the piston. In the illustration, the piston is restricting approximately 1/2 of
the outlet orifices.
Notch in
piston
Orifice
Sleeve
Piston
UFB-1 Flow Module
SYSTEM DETAILS