expansion tank

Just bought a house with an older boiler. It's been working pretty well, but I need to replace a couple of zone valves. I am an electrician, and pretty handy with tools but I have no experience with boilers and don't really want to flood or blow up my new place. I can replace the valves, but I...

Hello I just bought my new house and maybe two months after I bought it the water heater is now split down the side and the top looks like it's popping off. Water heaters covered under niba Home Warranty but only if it's leaking the bulge doesn't count or so they say. What should I do

About a year ago I had two old 50 gallon water heaters with new ones. The installer did two changes to the previous system. 1) He installed an expansion tank, and 2) he put the two water heaters in series (the previous ones were in parallel). Ever since then we have experienced hot water...

Hello: New to forum. I have an older Weil-McClain hot water boiler, single zone, with old style radiators. I noticed some of the radiators were not getting warm so checked water pressure guage. Only about 5lbs of pressure. I added water (Bell and Gossett water reducing valve) and the PRV popped...

For my first post here - a family I know moved into a house that's three levels, garage is at ground level and has two gas water heaters, one for each flat above. Both are 48 gallons. Each has four settings: A B C and Very Hot. Both are set at A. Both tanks have brand new T&P valves. They...

I did a quick forum search and I'm not sure I have the same issues others have had with needing to install expansion tanks. When I turn on either hot or cold (or mixed) the initial pressure is somewhere around 150psi (confirmed with a gauge at the hose outside). Then after 10-20 seconds or so...

Hello Everyone, I work for an energy efficiency retrofit company and have a project that uses hydronic heating system with 5 zones. The zones have circulators (dry rotor) on the return side of the boiler, and the it was designed (ages back) this way to allow the pumps to operate with cooler...

We recently discovered that our expansion tank had pinhole leaks so we turn the water off to it and unplugged the water heater. The problem is my husband had shoulder surgery and he cant work. He cant do anything on his own right now and our finances are reeeeally bad so buying even a new...

There are two issues I observe in my boiler heating system: (a) excessive pressure variation and (b) air trapped in the system. The distance from the lowest to highest point in the system is 8 feet, thus the minimum required pressure would be (8 / 2.31 + 3) ~= 6.5 psi. The operating pressure...