Vaillant Isolation Valve 19.05mm x 15mm 014714

The Vaillant 014714 is a cold water isolation valve assembly designed for use in Vaillant boiler systems. It allows the cold water supply to be isolated for maintenance or repair work without draining the entire heating system. This complete valve assembly is suitable for a range of Vaillant appliances, including the THERMOcompact series, and features a 19.05mm x 15mm connection. The valve is operated by a handle and is typically located on the cold water inlet pipe to the appliance. It is an essential component for isolating the water supply during servicing or component replacement.

• Visible leaks or drips from the valve body or connections.
• Difficulty turning the valve handle, indicating internal seizure or corrosion.
• The valve fails to fully stop the water flow when closed.
• Mineral buildup or scale around the valve, affecting operation.
• Water damage or staining near the valve.
• The valve handle spins freely without engaging the internal mechanism.

• Check the appliance GC number against the compatibility list to ensure correct fitment.
• Confirm the part number 014714 matches your existing valve.
• If replacing a valve on a boiler, ensure the system is drained and depressurised before work.
• Consider whether a new sealing washer or gasket is required for the connection.