![plumbing - Shut off cold water supply valve on the heater, now can't turn it on - Home Improvement Stack Exchange plumbing - Shut off cold water supply valve on the heater, now can't turn it on - Home Improvement Stack Exchange](https://i.stack.imgur.com/hOJ0I.jpg)
plumbing - Shut off cold water supply valve on the heater, now can't turn it on - Home Improvement Stack Exchange
![Pressure-Only Relief Valves on Water Heaters Are they safe on a calorifier, geyser, hot water cylinder Pressure-Only Relief Valves on Water Heaters Are they safe on a calorifier, geyser, hot water cylinder](https://inspectapedia.com/plumbing/3V040-073106s.jpg)
Pressure-Only Relief Valves on Water Heaters Are they safe on a calorifier, geyser, hot water cylinder
![HQMPC Tankless Water Heater Isolation Valves Tankless Water Heater Flush Kit Tankless Valve Kit 3/4" NPT, Including 1 Valve For Hot water,1 Valve For Cold Water, 1 Pressure Relief Valve, Water Heaters - HQMPC Tankless Water Heater Isolation Valves Tankless Water Heater Flush Kit Tankless Valve Kit 3/4" NPT, Including 1 Valve For Hot water,1 Valve For Cold Water, 1 Pressure Relief Valve, Water Heaters -](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61zC0iOAatL._AC_SL1143_.jpg)
HQMPC Tankless Water Heater Isolation Valves Tankless Water Heater Flush Kit Tankless Valve Kit 3/4" NPT, Including 1 Valve For Hot water,1 Valve For Cold Water, 1 Pressure Relief Valve, Water Heaters -
Water keeps flowing through hot water pipe despite shutting off water supply valve | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
![This looks like a pressure relief valve on the cold water line to my water heater. It is leaking outside. I've never seen a relief valve on a cold water line. Why This looks like a pressure relief valve on the cold water line to my water heater. It is leaking outside. I've never seen a relief valve on a cold water line. Why](https://preview.redd.it/6xkt5qdrlls61.jpg?auto=webp&s=a90a1432c82446450262430f38272c9652ffa7e8)