22mm Gate Type Pump Valve - Pack of 2 : Amazon.co.uk: DIY & Tools
FT 132 Isolating Valve Pump Valves 1" x 22mm straight
BALL TYPE PUMP VALVE - WRAS APPROVED
22mm Ball Type Pump Valve
Lever Handle Ball Pump Valve - 1.1/2" x 22mm (Single) from Tesla UK - Unvented Components Europe, Unvented Cylinder System Spares, Spares for Hot Water Systems, Plumbing & Heating Parts - Specialists