plumbing - What is this device on my water heater intake? - Home Improvement Stack Exchange
Anti-Vacuum Valves
Plimpton & Hills - Apollo 37202-01 3/4" Water Heater Vacuum Relief
Watts N36 Brass MNPT 3/4-in Vacuum Breaker in the Backflow Preventers & Vacuum Breakers department at Lowes.com
Vacuum Relief valve | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
Vacuum Relief Valves for Water Heaters | UpCodes
Rheem SP221790 Vacuum Relief Valve Assembly, Marathon
whats this on the water heater? - Plumbing Inspections - InterNACHI®️ Forum
Repair Water heater valve:
Necessity of Vacuum Relief Valve - Not Pressure Relief Valve | Page 3 | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
Repair Water heater valve:
Proper place for vacuum breaker | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
Buy Watts Low Lead Water Heater Vacuum Relief Valve 3/4 In. MIP
Watts Vacuum Breaker
Watts Vacuum Breaker
Vacuum Relief Valves for Water Heaters | UpCodes
Pass or Fail - Vacuum Relief Valves - YouTube
Watts LFN36-M1 Water Service Low Profile Vacuum Relief Valve for Water and Heater Tanks, 3/4 inch - Pipe Fittings - Amazon.com
Water Heater Pressure Relief Valve - Prevent Water Heater Explosion - Replace a Relief Valve - YouTube
2015 International Residential Code and Commentary, Volume 2 (IRC) - Chapter 28: Water Heaters - P2804.7 Vacuum-relief valve .
Bradford City Water Authority - Backflow & Thermal Expansion
IAPMO
