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Level Controls - IOM 313 313_IOM_RevC_0418
The following is a typical example of a tank filling/deaerator application using properly sized, selected, and maintained Warren
Controls Level Controls. Demand for water reduces the liquid level in the tank. The [A] 377 Float Cage opens the [B] 322L or 326L
Lever Valve to supply intake water to the tank. When the water reaches the desired level the float cage closes the lever valve
to accurately maintain the liquid at the desired level. Deaerators, tanks with steam blankets, produce additional liquid as
the steam condenses. The [C] 313 Overflow Trap traps and relieves this condensate through its internal pilot without
the steam blanket escaping. Overflow can occur if the water entering the tank exceeds its capacity. The 313 Overflow
Trap relieves the overflow through its internal single seated main stage valve. Falling liquid levels and condensing steam
can cause a vacuum that can damage the tank. The [D] 200 Vacuum Breaker opens to admit outside air to relieve the vacuum in
the tank. Warren Controls Level Controls are also used on boiler make-up water tanks and many other storage tank applications.
WARREN CONTROLS
LEVEL CONTROLS AT WORK...
