Coliter ® Straight Manual Thermostatic Valve – 1.0 MPa, 0–90°C, for Hydronic Radiator Systems

NQ2029 Straight Manual Thermostatic Valve – Brass Temperature Control Valve for Radiators

The Coliter® NQ2029 Straight Manual Thermostatic Valve is a manually operated thermostatic radiator valve designed for simple, reliable temperature regulation in hydronic heating systems—without requiring electricity. Featuring a straight-through configuration, it ensures minimal flow resistance and straightforward installation in-line with supply pipes. The valve includes a manual knob with numbered settings (typically 1–5) to adjust heat output based on user preference. Constructed from high-quality lead-free brass, it is rated for a nominal pressure of 1.0 MPa and suitable for water temperatures from 0°C to 90°C. It complies with ISO 228 (BSP parallel) threading standards and is available in two sizes: 15×20 mm (G1/2") and 20×25 mm (G3/4"), with overall lengths of L=96.5 mm and L=104 mm respectively. The valve head features an M30×1.5 mm thread, enabling optional upgrade to an automatic thermostatic actuator. Ideal for cost-effective, maintenance-free comfort in residential and light commercial buildings.