Sitting on the floor, this component looks just like a dog bowl until you look inside and see it has no bottom and realize it’s a stainless steel alcove for a tank fitting.

Alcoves are commonly used in the pharmaceutical industry to minimize nozzle projection when installing fittings in jacketed tanks.  There are several benefits to using alcoves in this manner.

  • Allows for short fittings, making them easier to reach and clean during CIP. 
  • Ferrules such as “na connects” and those welded to instruments, such as “level shells”, are short in length by design, making alcoves a necessity.
  • In the sidewall, the shorter ferrules are welded in the alcove on a slight angle to allow rinse water to drain back into the tank during CIP.
  • Some alcoves in the top head will have a built-in gutter to drain standing water during wash-down.

Figure 1 – the “dog bowl”

Figure 2 – bottom head of a jacketed tank with alcoves around the fittings

Figure 3 – top head of a jacketed tank with alcoves guttered to prevent liquid from pooling

To learn more about SFI tanks, go to:

Stainless steel alcoves used on double wall tanks

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