Best Of

what was his reasoning for tapping on the tank to begin with?

Has the safety relief on that heater let go recently?

In all my years of plumbing we never did anything special for PVC or ABS expansion. At least in residential installations. 70° ambient to maybe 105- 110° drain water temperature is common. So not a lot of movement. Maybe the dishwasher discharges hotter water for a brief period.

The metal roof makes more expansion contraction noise than the plumbing.

I imagine vinyl siding often sees a much wider ∆

Just to add to the above — you can't tell if an expansion tank is bad by tapping on it. Doesn't tell you anything.

just pressed the shraeder….and literally nothing comes out. Maybe 100% of the air was pushed out of the tank?

Ill cut shut off the water pressure and recharge it. See what happens.

I know 90 is very high. Its been that way for years. Hmmmm….maybe thats why the washer has been leaking??😁

@Intplm. said "They all have their ups and downs."

Unless you put them on a Horizontal. Then the water flows from one side to the other! (depenting on the direction of the pitch)

I thought you all learned that on the first day, Just after when payday is, and to not bite your fingernails.

I'm not a plumber, I'm an expert on residential and light commercial oil heat and hydronics, So my opinion may not hold as much weight as the others here…. But I would thing the best pipe is the one that doesn't leak! Just sayin'

the parts of my orangeburg that didn't have roots in it is 75 years old

Hi @ethicalpaul , Honest questions are good. As HR said, PVC drain pipe and fittings are essentially not available where I am, so the realistic choices for me are cast iron and ABS. I do wish we had never gone to foam core pipe. The only benefit is in up front cost. Orangeburg probably holds up better 🙀

Yours, Larry