Product Overview

AUTOMATIC AIR VALVES
NO. 7 AUTO-VENT
Correct problems and avoid trouble by installing these float-operated Auto-Vents.
They vent air from mains, solar panels, pipe lines, boilers, unit heaters, chillers,
convectors, radiant panels, coils, baseboard and free-standing radiation.
For All Hot Water and Solar Heating Systems
3217 N. Pulaski Rd. Chicago, IL 60641
773 685 7300 • [e-mail]
PRODUCT
NUMBER
MOUNT CONNECTION
MAX. VENTING
PRESSURE
SIZE MATERIAL
No. 7 Vertical mounting 1/8” I.P. female connection 75 lbs. 4 3/8” x 2 1/4” Copper finish with a polished brass cover
No. 71 Vertical mounting 1/4” I.P. male connection 150 lbs. 4 3/8” x 2 1/4” Copper finish with a polished brass cover
No. 74 Vertical mounting 1/4” I.P. female connection 150 lbs. 4 3/8” x 2 1/4” Copper finish with a polished brass cover
No. 75 Combination connection 1/2” female & 3/4” male 150 lbs. 4 3/8” x 2 1/4” Copper finish with a polished brass cover
No. 77 Vertical mounting 1/8” I.P. female connection 75 lbs. 4 3/8” x 2 1/4” Copper finish with a polished brass cover
No. 78 Vertical mounting 1/8” I.P. male connection 75 lbs. 4 3/8” x 2 1/4” Copper finish with a polished brass cover
The No. 7 Series Auto-Vents are reliable, automatic
air eliminating valves for concealed radiators, pipe
lines, tanks and other devices where water or liquids
are used for heating and cooling. They have proven
to be the solution to problems that have confront-
ed engineers and contractors in which air pockets
or traps retard the free circulation of the liquids and
reduce the efficiency of the system or appliance.
The No. 7 Series Auto-Vents air eliminators are made
of brass and equipped with a self-closing, float-oper-
ated valve. The valve is equipped with a Monel metal
spring and a Neoprene
®
valve seat which is unaffect-
ed by high temperatures, oil and anti-freeze. No air
chamber is required. The vent is regularly fitted with a
patented cap that may be used as a check in case of
a leak caused by core sand or scale.
7 SERIES AUTO-VENTS