BRASS AUTOMATIC AUTO BOTTLE AIR VENT 15MM COMPRESSION AIRVENT VALVE
This is a branded high quality brass automatic auto bottle air vent which is a standard 15mm compression airvent valve.
This item has a ½" BSP male thread.
It automatically removes trapped air from a central heating installation.
has a shut off cap that can be used to stop auto venting if so
required. The valve in the picture shows a brass shut off cap, sometimes
they have a plastic cap (makes no difference to operation of the valve)
note that in certain circumstances air can be drawn into a system
through an auto valve when the pump is running. If this is the case use
the small cap to close off after venting has finished.
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