Durst Catalog 2013
MAID-O'-MIST STEAM VENTS
JACOBUS STEAM-VENTS A vent port size for every room, from the largest size for the coldest rooms to the smaller size for the "too hot" rooms. Easy to install on any radiator.
No.
Series
Size
Vent
ANGLE PATTERN
A885
"
4
.040
1 8
MADE IN USA
A886
"
5
.070
1 8
A887
"
6
.0935
1 8
A888
"
C
.1285
1 8
A889
"
D
.1850
1 8
12 per Box
No.
Series
Size
Vent
STRAIGHT PATTERN
A890-4
"
4
.040
1 8
MADE IN USA
A890-414
¼"
4
.040
A890 A891 A892 A893 A894 A895 A896 A897
"
5
.070
1 8
¼"
5
.070
"
6
.0935
1 8
¼"
6
.0935
"
C
.1285
1 8
¼"
C
.1285
"
D
.1850
1 8
¼"
D
.1850
12 per Box
No.
Series
Size
Vent
STRAIGHT PATTERN
A900 .1850 On basement mains install one or more No.1 air valves with 1 8 " or ½" , ¾" combination vertical connection at the end of the short main, or the main running to the warm side of the building. Also install two or three No. 1 valves at the end of a long main, or the main running to the cold side of the building, depending on the building size. 1 ¾" x ½"
MADE IN USA
12 per Box
USAGE CHART FOR STEAM VENTS: 4) For radiators in room in which thermostat is located; or where radiators affect operation of thermostat. 5) Venting capacity equal to 4 ordinary air valves. Use on radiators near boiler and in warm rooms (second floor radiators, for example). 6) Venting capacity equal to 15 ordinary valves. Use on radiators farther from boiler and in cold rooms. C) Venting capacity equal to 15 ordinary air valves. Use on radiators farthest from boiler and in coldest rooms (for example, on third floor radiators and above). D) Venting capacity equal to 27 ordinary air valves. Use when large amount of air must be vented such as on radiators with particularly long branches and on very large radiators.
C
D
6
6
4
5
62
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