Regulations
Terrier thermostatic radiator valves are approved to EN 215. For valves with compression connections, the connections are approved to BS EN1254-2; threaded connections comply with BS 21 or BS 2779.
They are designed for use only in an indirect open-vented or sealed water-filled central heating and/or indirect hot water system and for no other purpose.
They must be used within the pressure and temperature limits stated in the technical information table below.
Operating Conditions |
Maximum |
System Water Temperature (at 5bar) |
120°C |
Operating pressure (at 65°C) |
10 bar |
Under no circumstances must they be used in systems containing liquids or solutions other than water. The only exception is the addition of a proprietary central heating corrosion inhibitor, cleaner or anti-freeze to the system water in accordance with the manufacturer's instructions.
Terrier heating controls are manufactured to a strict quality assurance system in accordance with ISO 9000: 2015.