Automatic air vent designed to vent accumulation of troublesome air wherever it can be trapped.
Model 7 rated at maximum operating temperature of 240°F at 75 psi
Model 67 rated at maximum operating temperature of 240°F at 35 psi
Model 87 rated at maximum operating temperature of 240°F at 150 psi
Reviewed by 2 customers
Displaying reviews 1-2
Comments about Model No. 67, 1/8" Automatic Air Vent (Male Threaded):
Two of the model 67 automatic air vents initially installed are giving me some difficulty, am still working on them; two others are working very well. Have two more that I have not tried. I think I have a problem with the highest level, farther away radiators, where the issue has developed with the air vent. Am a home owner and probably would benefit with some counseling, if you have it.
Comments about Model No. 87, 1/2" (Female) & 3/4" (Male) Automatic Air Vent:
Quality has not been cheapened like so many things today. Pay a little more for a much longer service life.
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A:as long as your systems is running less than 35 PSI yes. if it is over 35PSI, you need the model 7