Valve and Nipple for the Push Button Sight Gauge. Screws directly into the Union (Various sizes available - see separate item Unions). Spring Loaded Push Button Valve automatically defaults to the closed position (It is illegal not to have an automatically closing valve on a Sight Tube because of the risk of pollution).
Suitable for use with fuels (not suitable for use with water).
Tip: If the existing PBSG does not have a green push button then it is definitely not one of ours. If it has a red push button then it is possibly an imported Chinese copy, which we cannot supply parts for.