Purmo radiator valve extension 1/2" L-15 (model 06300215)

Purmo radiator valve extension 1/2" L-15 is an accessory designed to increase the distance between a radiator valve and a thermostatic head or connecting pipe. The L-15 length provides extra clearance in recessed installations or where the valve and control head cannot be mounted directly adjacent. The extension is compatible with 1/2" connections commonly used in central heating radiator assemblies and helps achieve correct alignment and operation of thermostatic valves.

Advantages

The extension offers a simple mechanical solution to clearance and alignment problems without altering the valve or radiator body. Its standard 1/2" connection ensures compatibility with many radiator valves and fittings, and the L-15 length gives predictable, consistent spacing for easy installation of thermostatic heads. Using an extension reduces the need for custom piping adjustments and maintains neat visual integration of radiator controls.

Suitable for

• Recessed radiator installations where the valve body is set back from the radiator face
• Situations requiring additional clearance for thermostatic heads or manual knobs
• Replacement or retrofit work to standardise valve-to-head spacing
• Central heating radiator assemblies with 1/2" connection fittings

Key specifications

• Connection size: 1/2" compatible thread for radiator valves and fittings
• Length designation: L-15 providing increased clearance between valve and head
• Function: mechanical extension to adjust spacing and alignment
• Application: designed for use with central heating radiator valves and thermostatic heads

How to use

Turn off the heating system and isolate the radiator before installation. Unscrew the thermostatic head or existing adapter from the valve spindle, then thread the extension onto the valve connection until hand-tight, taking care to align the extension so the thermostatic head will sit straight. Refit the thermostatic head or control knob onto the extension and tighten to the manufacturer’s recommended torque. After installation, restore system pressure and check for leaks around the new joint, making any minor adjustments as needed.

Usage recommendations

Use appropriate sealing material or manufacturer-recommended gaskets on threaded joints to ensure a watertight connection. Match the extension’s connection size to the existing valve thread and verify compatibility with the specific thermostatic head model before tightening.