Coliter ® Straight Automatic Thermostatic Valve – 1.0 MPa, 0–90°C, for Hydronic Radiator Systems
NQ1022 Straight Automatic Thermostatic Valve – Brass Self-Regulating Radiator Valve for Energy-Efficient Heating
The Coliter® NQ1022 Straight Automatic Thermostatic Valve is a self-regulating thermostatic radiator valve that automatically modulates hot water flow based on ambient room temperature—requiring no electricity. Its straight-through configuration ensures minimal flow resistance and straightforward in-line installation in hydronic heating systems. 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. The valve complies with ISO 228 (BSP parallel) threading standards and is available in two sizes: DN15 (G1/2") with L=97 mm, H=41.5 mm, and DN20 (G3/4") with L=101.5 mm, H=43.5 mm. It features a standard M30×1.5 mm mounting thread, compatible with universal automatic or pre-set thermostatic heads. Ideal for residential and commercial radiator applications, this valve enhances thermal comfort while reducing energy consumption by up to 20%.
Installation diagram
Product Description
| DN | G | DE | L | H |
| 15 | G1/2" | 20 | 97 | 41.5 |
| 20 | G3/4" | 25 | 101.5 | 43.5 |
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 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.
