The Optimum 22mm 2 Two Port Motorised Zone Valve is a brass valve designed to regulate the flow of water in heating systems. It is suitable for commercial and industrial use, featuring a 5-wire connection system that allows for precise control. This Zone Valve is a reliable replacement for the Honeywell V4043H model, ensuring smooth operation in heating applications. The compression connections make installation straightforward, and with two outlets, it provides flexibility in directing the flow of water within the system.