Straight lower connection radiator valve FONDITAL IT Blitz/Calidor/Extratherm, model 520216P

Straight lower connection radiator valve by FONDITAL IT is designed for lower, straight inlet mounting on compatible Blitz, Calidor and Extratherm radiators. The valve provides a controlled flow interface between the radiator and the heating pipework, allowing installation or replacement where a lower straight valve connection is required. Its design matches the inlet orientation of the specified radiator models and ensures secure mechanical and hydraulic connection in standard residential and commercial heating systems.

Advantages

The valve offers a compact, straight-through layout that simplifies connection to lower inlet ports and reduces the need for additional pipe bends. It enables reliable flow control and straightforward replacement of existing lower connection fittings on compatible radiators. Constructed to meet common heating installation requirements, the valve is suitable for both new installations and maintenance tasks, helping maintain system efficiency and leak-free operation when installed correctly.

Suitable for

• Replacement of lower straight inlet valves on compatible Blitz, Calidor and Extratherm radiators
• New radiator installations requiring a straight lower connection
• Residential and light commercial central heating systems
• Maintenance work where direct lower pipe connection is preferred

Key specifications

• Orientation: straight, lower connection suitable for bottom inlet radiators
• Function: manual flow control between radiator and heating pipework
• Compatibility: designed to match the lower inlet interface of specified radiator models
• Application: intended for hot-water central heating systems in residential and commercial settings
• Installation: designed for inline mounting at the radiator inlet with standard pipe connections

How to use

Shut down the heating system and drain the relevant circuit before removing the existing valve. Position the straight lower connection valve to align with the radiator’s bottom inlet and the incoming pipework, then secure it according to the radiator manufacturer’s instructions and standard plumbing practice. Refill and vent the system to remove air, then check for correct operation and leak-free joints. Use appropriate seals and compatible connection fittings to ensure a durable installation.

Usage recommendations

Verify radiator inlet dimensions and thread types before purchase to ensure compatibility. During installation use appropriate sealing materials and follow local plumbing regulations; if uncertain, consult a qualified heating engineer to avoid incorrect fitting or leakage.