O v e r h e a d P l u m b i n g D e t a i l s
Overhead piping installations above process connections require installing a check valve in the “To Process” line and a 12 inch {305 mm} riser with a check valve and vacuum break in the “From Process” line to prevent siphoning when shutting down the chiller. Install a vent tube at 12 inches {305 mm} above the highest system point to prevent over pressurization. Maximum height of piping above process connections is 25 ft {7.6 m}.
vacuum break |
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| Internal vent; 1 ft above | |||
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| highest water level | ||||
check valve |
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12 in. riser |
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From process
To process
back view
A p p e n d i x l G - 1