Honeywell Straight Automatic Bypass Valve 22mm

Designed for hydronic heating systems.

Features:

• Controls water flow in the heating circuit according to the water pressure across it and is used to maintain a minimum flow rate through the boiler and to limit circulation pressure when other water paths are closed.
• Likely to reduce noise in systems caused by excess water velocities.
• Rugged design.
• Knurled hand wheel for ease of grip.
• Hi-visibility markings on bonnet for low light conditions.
• Protection cap to limit user access to settings.
• Settable differential pressure from 0.1-0.6Bar.
• Factory set to 0.2Bar.
• Supplied with compression fittings for 22mm copper pipe.
• Spanner flats to assist with tightening of fittings.
• High flow rate capacity, up to 1.5m³ per hour.
• The use of automatic bypass valves becomes particularly important when heating systems include large numbers of thermostatic radiator valves (TRVs) - Whilst the TRVs are open the automatic bypass valve remains closed, however, as the TRVs start to close, the automatic bypass valve starts to open maintaining the required water flow through the boiler.

Technical data:

• Medium - Water or water-glycol mixture, quality to VDI 2035
• pH-value - 8-9.5
• Operating temperature 2-130°C (36-266°F)
• Operating pressure max - 10Bar (145psi)
• Differential pressure pre-setting range - 0.1-0.6Bar (1.45-8.7psi), factory setting: 0.2Bar (2.9psi)
• kvs (cv)-values - 2.3 (2.7)
• Brand - Honeywell