Angled bottom connection valve for radiators FONDITAL IT Blitz/Calidor/Extrathermserir (model 520215M)

Angled bottom connection valve for radiators FONDITAL IT Blitz/Calidor/Extrathermserir (model 520215M) is an angled inlet fitting designed for installation at the lower connection point of compatible radiators. It provides a compact, mechanically secure connection between the radiator and the heating circuit, allowing supply or return pipework to be attached at a right-angled orientation. The fitting is intended for central heating systems and is compatible with the connection geometry used on FONDITAL IT Blitz, Calidor and Extrathermserir radiator models.

Advantages

This angled bottom connection valve offers a space-saving profile that facilitates pipe routing close to walls and underneath flooring. The component is engineered to provide a reliable mechanical joint with radiator thermostatic or lockshield fittings, ensuring consistent alignment and simple installation. The design reduces strain on connecting pipes and supports standard central heating flow directions, contributing to stable hydraulic performance in domestic and light-commercial radiator circuits.

Suitable for

• Connection of supply or return pipes to bottom inlet radiators
• Central heating installations using FONDITAL IT Blitz, Calidor or Extrathermserir radiators
• Tight or compact installation spaces where angled pipe entry is required
• Replacement of existing bottom-angle radiator fittings to restore leak-free joints

Key specifications

• Angled bottom inlet configuration for radiator base connections
• Compatible with the connection geometry of FONDITAL IT Blitz, Calidor and Extrathermserir radiator models
• Designed for use in central heating systems (supply or return side)
• Compact form factor suitable for close-to-wall installation
• Mechanical connection intended to mate with radiator thermostatic or lockshield fittings

How to use

Position the angled bottom connection valve at the radiator’s lower connection point and align it with the radiator thermostatic or lockshield fitting according to the radiator manufacturer’s connection orientation. Secure the valve to the radiator using the appropriate threaded or compression joint and tighten to the recommended torque to avoid overtightening. Connect the supply or return pipe to the valve outlet and ensure proper sealing with suitable fittings or sealants. After installation, pressurize and bleed the radiator to remove air and check for leaks at all joints before returning the system to normal operation.

Usage recommendations

Use this angled bottom connection valve only with compatible FONDITAL IT radiator models and ensure installation by a qualified heating professional. Verify material compatibility, pipe dimensions and sealing method prior to fitting. Perform a pressure test and visual inspection after installation and periodically during the system’s service life to detect wear or leakage.