Martec Vacuum Valve Repair Kit

This repair kit for Martec vacuum (anti-siphon) valves fits all valve sizes (12–25mm), so a single spare-part number covers valves of every size. The kit includes the cap and rubber valve — the two parts that typically wear out or age first over time, causing the valve to leak or stop working reliably. An affordable way to service an existing vacuum valve yourself without replacing the whole unit.