For those who like to be equipped - Dr. Valve contains a complete set of square stem caps in all standard sizes. Suitable for all common valves. In the small and handy tool case, the 17 square stem caps made of hot-dip galvanised cast iron are neatly stowed away. They are easily attached to the valve stem or the extension by means of a notched pin or screw.
Complete set with square stem caps in all standard sizes

Channel penstock with rectangular opening, 3-sided sealing

Weir type channel penstock with rectangular opening, 3-sided sealing

Penstock with rectangular opening, 4-sided sealing

Penstock with semicircular opening, 4-sided sealing

Weir type penstock, 4-sided sealing

Penstock with flange and circular opening, sealing on all sides

Penstock with bottom for embeddin and circular opening, sealing on all sides

Penstock with circular opening, sealing on all sides

Large penstock with rectangular opening, 3-sided sealing

Large weir type channel penstock with rectangular opening, 3-sided sealing

Large penstock with rectangular opening, 4-sided sealing

Large penstock with semicircular opening, 4-sided sealing

Large weir type penstock, 4-sided sealing

Penstock with rectangular opening, 4-sided sealing