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Name these 1955 boiler components


John Kogel
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The original oil burner has been replaced with a 125 amp electric unit. This little unit heats about 2000 sq ft.

What are the red devices on the supply pipe and what functions do they serve? From the right at the supply valve, I see a cast iron bulb that could be a sediment trap. Then there's a pressure regulator? The device in the foreground has a discharge tube. Is it a pressure relief valve? Why does this system need these devices?

At the left of pic 1 is the 55 year old water heater. I called it copper, but it looks like it could be brass? It has one 120 volt element, and is still heating water faithfully. The pressure relief valve is leaking, though. I don't think there is a TPRV with a temperature sensor that is long enough to be mounted that high above the tank, is there? I described it as a PRV.

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Yes, I saw that asbestos.

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I think I did it right- there are four items, they're all red:

PRV, regulator, back flow preventer aka check valve, and the fill valve. Did I miss something?

I can name that boiler in three components!*

Chad you are right with your description of FOUR components.

* likely only seven people will catch this.

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Thanks, Bill. I will file that one for next time, pressure reducing valve in front of a pressure relief valve. (But behind it in the pic).

A check valve and that other thing that's not a boiler component. [:)]

I don't have pics of the original circulating pump, but I got the instructions.

It needed oil every 3 months and not sewing machine oil, either. SAE 20.

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Chad, if you had 5 of these pumps in your basement, you could oil a pump every weekend of the year for the rest of your life. Five pumps, each with 3 oil cups, spread over a 3 month rotation, with a holiday.

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Chad, if you had 5 of these pumps in your basement, you could oil a pump every weekend of the year for the rest of your life. Five pumps, each with 3 oil cups, spread over a 3 month rotation, with a holiday.

I tried to get pumps with oil cups, but they're harder to find. Now, I'll never get to wear my engineer's cap.

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