Luis, Any auto air vent that is a body and float design has to be installed in a vertical application. The only Hygroscopic auto air vent that can be installed in a horizontal position is the Ca;effo 5080 Hygrocal. That is the 1/8" hygroscopic air vent that has manual air venting and auto air venting via the internal hygroscopic discs, this model does not have the internal float.
Luis, Any auto air vent that is a body and float design has to be installed in a vertical application. The only Hygroscopic auto air vent that can be installed in a horizontal position is the Ca;effo 5080 Hygrocal. That is the 1/8" hygroscopic air vent that has manual air venting and auto air venting via the internal hygroscopic discs, this model does not have the internal float.