Coliter ® Angle Manual Thermostatic Valve – 1.0 MPa, 0–90°C, for Hydronic Radiator Systems
NQ2030 Angle Manual Thermostatic Valve – Brass Temperature Control Valve for Radiators
The Coliter® NQ2030 Angle Manual Thermostatic Valve is a manually operated thermostatic radiator valve designed for reliable, electricity-free temperature regulation in hydronic heating systems. Its angle configuration enables efficient installation in tight spaces while maintaining smooth water flow. The valve features a manual knob with numbered settings (typically 1–5) to adjust heat output according to user comfort needs. Constructed from high-quality lead-free brass, it is rated for a nominal pressure of 1.0 MPa and operates within a temperature range of 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 corresponding dimensions L=51–56 mm and H1/H2 around 50–59 mm. The head includes an M30×1.5 mm thread, allowing future upgrade to an automatic thermostatic actuator. Ideal for residential and light commercial applications seeking simple, durable, and cost-effective climate control.
Installation diagram
Product Description
| DN | G | DE | L | H1 | H2 |
| 15*20 | G1/2" | 20 | 51 | 54.5 | 50.5 |
| 20*25 | G3/4" | 25 | 56 | 59 | 51 |
Technical Specifications
Nominal Pressure: 1.0 MPa
Working Medium: Water
Working Temperature: 0℃ ≤ t ≤ 90℃
Pipe Threads: ISO 228
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Faq - Frequent questions
Introduction to Manual Thermostatic Valve
Coliter®’s manual thermostatic valves provide simple, reliable temperature regulation for hydronic radiator systems without electricity. The series includes straight models (NQ2026, NQ2027, NQ2029) and angle types (NQ2012, NQ2028, NQ2030, NQ2039), all featuring a manual knob with numbered settings (e.g., 1–5) to adjust heat output based on user preference. Constructed from high-quality lead-free brass, rated at PN10 (1.0 MPa), and suitable for temperatures up to 110°C, these valves comply with European heating standards and include an M30×1.5mm thread for optional upgrade to automatic thermostatic heads. Ideal for cost-effective, maintenance-free comfort control in residential and light commercial buildings.
