Danfoss ARV22 Auto Bypass Valve (22 mm) — a compact angled, self‑acting bypass that maintains minimum boiler and pump flow, reduces radiator noise and improves system efficiency. Adjustable 0.05–0.5 bar; 4 bar max; 100°C max.

• Simple, easy to set, self acting solution
• Reduces risk of noise in systems fitted with radiator thermostats
• Improves system efficiency
• Maintains minimum flow rates through the boiler and pump
• Essential in low water content boiler systems
• Setting range of 0.05 to 0.5 bar
• Maximum flow temperature is 120°C
• Maximum working pressure is 4 bar
• Maximum flow temperature 100°C (manufacturer datasheet) for typical hydronic heating applications.
• Nickel finish and lightweight construction (net 0.252 kg, volume 0.372 L) for corrosion resistance and space‑saving fitment.