The Altecnic 15mm Manual Radiator Valve c/w Doc is a manual radiator valve designed to control the flow of hot water into a radiator in heating systems.

Here’s a breakdown of the key terms:

• 15mm: Refers to the valve size, indicating that it connects to 15mm pipework, a common size in domestic heating systems.
• Manual Radiator Valve: This type of valve requires manual adjustment to control the water flow into the radiator. It doesn’t automatically adjust based on the room’s temperature like a thermostatic radiator valve (TRV) would.
• Doc: “Doc” stands for drain of cock, which allows the system to be drained from this valve.

This type of valve is useful in systems where manual control is sufficient, and it is typically more affordable than thermostatic alternatives.