@plumbingdoctors: 🔥 Here’s how a 2-port valve works 👨‍🔧 A 2-port valve has: ✅ One inlet ✅ One outlet ➡️ The arrow on the valve body shows the direction of flow 🔥 IN = from the heat source (usually the boiler) ➡️ OUT = where the heat is going: 🚿 Hot water cylinder 🏠 Underfloor heating 🔥 Radiators Understanding flow direction is essential for correct installation, wiring and fault finding on heating systems 📚💡 Perfect for apprentices and engineers learning heating controls 👨‍🔧 👇 Follow for more S & Y-Plan tips 🔗 Check the link in the bio for the training course I have created #SPlan #YPlan #BoilerRepair #HeatingEngineer #Plumbing

Heating & Plumbing Doctors

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Sunday 31 May 2026 11:07:00 GMT