Terrier manual radiator valves are generally designed to BS2767-10

• 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 below
• System Water Temperature (at 5bar)- Maximum 120 Deg C
• Operating pressure (at 65 Deg C)- Maximum 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.