User Guide

Attention
The installation of the valve in places subject to freezing is not
recommended. In the case of installation in locations that cannot be
inspected, it is recommended to replace the upper caps with the
safety hygroscopic caps, code 59681. To allow for the venting of the
air during normal operation, the upper cap must be loose (tight in the
hygroscopic version).
Maintenance
The DISCALAIR automatic air vent valve is designed to enable the
inspection of the internal mechanism.
The accessibility to the moving parts that control the air outlet is
obtained by simply removing the upper cover. The body is also
detachable from the lower part connected to the piping.
It is recommended to install a shut-off valve before the DISCALAIR
device to simplify any maintenance operations.
3
Installation
The DISCALAIR automatic air vent, series 551, must be installed in a vertical position. They
are typically installed on the manifolds, on the rising main and in the points of the circuit where
air bubbles are concentrated and must be vented.