Woodside offer a range of FOX Valve Extension Stems which allow Ball Valves to be completely buried below ground, with just a small chamber near the surface which the valve can be operated from.
The Telescopic Valve Extension Stems are available in two duties for small and large valves and two adjustable length options to suit a variety of trench depths. The valve extension stem simply slots on top of the valve, fastens with a retaining pin, and the telescopic riser stem can then be adjusted to the correct height whilst back-filling (depending on the burial depth of the valve).
Once the back-filling is almost complete, a Fox Fittings Heavy Duty Street Box can be installed to cap the top of the stem, whilst retaining control of the valve.
For use with Fox Fittings Electrofusion/Spigot PE Ball Valves