<b>Twinkle Star 3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit</b><br> <b>Package Include</b><br> 1x hot isolation valves <br> 1x cold isolation valves <br> 1x pressure relief valve <br> Material: Heavy Duty Brass <br> <b>NOTES:</b><br> 1. The water heater owner must manually operate the valve at least once a year to ensure the waterway is clear.<br> 2. Please check to see that the dis-charge line is securely attached and properly in-stalled before lifting the lever, prevent injury or property damage.<br> 2. Avoid contact with the hot water dis-charged during the test to prevent personal injury.<br> 3. At least every three years  the valve shall be inspected by a licensed plumbing contractor or qualified service technician and replaced as necessary.<br> 4. If discharge occurs during normal operation CALL A PLUMBER IMMEDIATELY. Discharge indicates an unsafe temperature or pressure Condition or a problem with this valve.<br>