3/8 Inch BSP Brass Automatic Air Vent
- This item has a 3/8 Inch BSP male thread.
- Must be mounted in vertical position.
- It automatically removes trapped air from a central heating installation.
- It has a shut off cap that can be used to stop auto venting if so required. The valve in the picture shows a plastic shut off cap, sometimes they have a brass cap (makes no difference to operation of the valve).
- Please 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.
