Xylem Bell & Gossett Hoffman Speciality Series Engineering Data Manual page 35

One pipe steam systems radiator connections
PACKLESS
RADIATOR
VALVE
PITCH DOWN FROM HERE
SUPPLY MAIN
Upfeed connection to radiator
PACKLESS
RADIATOR
VALVE
MINIMUM COOLING LEG 5'-0" LONG
Downfeed connections dripping riser into condensation pump return
36
AIR VALVE
SUPPLY MAIN
DRY RETURN
SUPPLY MAIN
PACKLESS
RADIATOR
VALVE
NOT LESS
THAN 18"
REDUCER
WATER LINE OF BOILER
CAN BE
REDUCED
(Never Less
than 3/4 ")
WET RETURN
Downfeed connections with wet return
RISER
VENT
VALVE
TRAP
PACKLESS
RADIATOR
VALVE
PITCH DOWN FROM HERE
Radiator connection taken
from up or downfeed riser
VENT
VALVE
AIR VALVE