Spares2go 22mm Motorised 2 Port Inline Zone Valve for Central Heating/Boiler Systems : Amazon.co.uk: DIY & Tools
Amazon.com: Kazeffi Motorized Zone Valve,2 way,3/4" Sweat,Normally Closed,4 wire control 24 VAC with End Switch, Replacement for Honeywell V8043E1061 : Industrial & Scientific
ESi 2 Port 28mm Motorised Zone Valve | Motorised Valves
2-Way vs 3-Way Valves: Which Type is Right for You? | Baelz North America
3/2 Port Diverter Rough Valve Only
2 Wires 2 Way Motorised Valve 2-port Nc 220v Electric Motorised Ball Valve Normally Closed Electrovalve - Valves - AliExpress