Offset and straight pattern designs for flat glass and tubular
glass gages
Penberthy offers offset and straight pattern gagecocks that isolate the gage chamber from the liquid contents of the vessel.
Offset gagecocks have an advantage of permitting the inside of the gage glass to be cleaned easily with a minimum
of disassembly. By removing the vent and drain plugs (or other connection), a straight passage through the gage chamber is opened.
A brush can be inserted through the gagecocks vent and drain for glass cleaning.
To prevent rapid loss of fluid in the event of accidental glass breakage, Penberthy supplies its gagecocks with automatic
ball check shut-off. Should the glass break, the pressure drop causes the ball checks to seat to prevent loss of tank contents.
To unseat these ball checks during the liquid level readings, the tip of the gagecocks stem has an extension that pushes
the ball away from its seat while allowing the gage column to fill as liquid contents pass around the ball. Stainless steel retainers
prevent reverse seating of balls or loss of balls during installation.
Both upper and lower gagecocks in each set are equipped with horizontal ball checks. Balls are located on the vessel
side of the gagecocks seat.
Gagecocks with ball checks omitted meet ASME boiler requirements. As an alternative method to meet ASME boiler requirements,
the lower gagecock is available with an optional vertical rising ball check located in the offset portion of the gagecocks body, and
the upper gagecock has a leaky seat.
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