White-painted temperature control valve

Key Features and Specifications

Appearance: White powder-coated finish

Purpose: Designed to blend seamlessly with common white radiators and interior wall colours, achieving an aesthetically pleasing, discreet decorative effect. This constitutes its most distinctive visual characteristic.

Manufacturing Process: The valve body is typically crafted from brass or cast iron, with the surface treated via electrostatic powder coating or baking enamel. The coating must exhibit high-temperature resistance, rust prevention, and strong adhesion.

Core Functionality: Manual flow regulation and temperature control

Operating Principle: Rotating the handwheel (handle) raises or lowers the valve stem, altering the opening between the valve core and seat. A wider opening increases hot water flow, enhancing radiator heat output and raising room temperature; conversely, a narrower opening reduces heat output.

Control Logic: This constitutes an open-loop control system. Users manually adjust settings based on perceived comfort levels, without the capability to precisely set or maintain a specific temperature value.

Valve Body Configuration Types

Straight-through Valve: Inlets and outlets are positioned at 180 degrees, with pipes and valve aligned on a single axis.

Angle Valve: Inlets and outlets are positioned at a 90-degree right angle. This is the most prevalent configuration, ideally suited for radiator pipework emerging from walls. It offers space-saving advantages and aesthetically pleasing installation.

Key Internal Components

Valve Core: The central regulating component. Two common types exist:

Tapered Valve Core: Simple construction with generally linear adjustment characteristics.

Percentage Flow Valve Core: A more sophisticated design where the rotation angle correlates proportionally with flow rate increase, enabling smoother and more precise regulation.

Preset Function (available on select premium models): A numbered adjustment ring (e.g., 1-5) on the valve body limits maximum flow. Set by professionals during installation, it balances flow between radiators in different rooms, resolving system ‘hydraulic imbalance’ to ensure both distant and nearby radiators heat effectively.