INSTALLATION INSTRUCTIONS FLOW FORM Tools and Material Required Suitable valves included Pipe dope Tape measure Allen Wrench Screwdriver Electric Drill Drill Bit to suit screw Assembly Instructions Sufficient quality pipe dope must be applied to valve tail threads prior to their installation. Install the valves using the correct (1 / 2 inch) size Allen Wrench Install Air Vent (A). Connect the radiator to heating circuit with air vent on the return end.