Xylem Bell & Gossett Hoffman Speciality Series Engineering Data Manual page 36

One pipe steam systems convector connections
AIR VALVE
PITCH DOWN
Venting concealed radiator
of header type–air vent
tapping in top
STEAM MAIN
MAIN VENT
AT LEAST 12"
AT LEAST 18"
ABOVE W.L.
WET
RETURN
Dripping end of one pipe steam main where
same extends beyond wet return
Expansion joint made up of pipe
for horizontal pipes–dripped into
wet return
Expansion joint made up of pipe
for horizontal pipes–not dripped
PACKLESS
RADIATOR
VALVE
AT LEAST
24"
DRY BLEEDER
DIRT POCKET
AIR VALVE
AIR CHAMBER
SUPPLY
VALVE
PITCH DOWN
OR UNION
AIR VALVE
AIR CHAMBER
SUPPLY
PITCH DOWN
OR UNION
VALVE
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