Coliter ® Straight Automatic Thermostatic Valve – 1.0 MPa, 0–100°C, for Hydronic Radiator Systems
NQ1017 Straight Automatic Thermostatic Valve – Brass Self-Regulating Radiator Valve for Energy-Efficient Heating
The Coliter® NQ1017 Straight Automatic Thermostatic Valve is a self-regulating thermostatic radiator valve that automatically adjusts hot water flow in response to room temperature—operating entirely without electricity. Its straight-through design ensures low flow resistance and straightforward in-line installation in hydronic heating circuits. Constructed from high-quality lead-free brass, the valve is rated for a nominal pressure of 1.0 MPa and suitable for water temperatures ranging from 0°C to 100°C. It complies with ISO 228 (BSP parallel) threading standards and is available in size DN15 (G1/2"), with dimensions L=87.5 mm and H=45 mm. The valve features a standard M30×1.5 mm mounting thread, ensuring compatibility with universal automatic or pre-set thermostatic heads. Ideal for residential and light commercial radiator systems, it enhances comfort while helping reduce energy consumption by up to 20%.
Installation diagram
Product Description
| DN | G | B | L | H |
| 15 | G1/2" | 16 | 87.5 | 45 |
Technical Specifications
Nominal Pressure: 1.0 MPa
Working Medium: Water
Working Temperature: 0℃ ≤ t ≤ 100℃
Pipe Threads: ISO 228
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Faq - Frequent questions
Introduction to Automatic Thermostatic Valve
Coliter®’s automatic thermostatic valves enable precise, energy-saving temperature control in hydronic radiator systems. The series includes straight (NQ1022, NQ1019, NQ1017) and angle (NQ1039, NQ1023, NQ1020, NQ1016) models with pre-set or adjustable thermal heads that automatically modulate hot water flow based on room temperature—no electricity required. Constructed from high-quality brass with lead-free compliance, rated at PN10 (1.0 MPa), and suitable for temperatures up to 110°C, these valves comply with European heating standards and feature M30×1.5mm mounting threads for universal thermostat head compatibility. Ideal for residential and commercial radiator retrofits—reducing energy consumption by up to 20% while enhancing comfort.
