What was this fitting used for?

Mike T., Swampeast MO

Since the zone with the restrictor was only about 1/3 the length perhaps it was the gross adjustment with the circuit setter used for fine-tuning???

Unknown

No wonder I had such a hard time blowing through this circuit!

When I tore out an old HeatMaker, I noticed a strange looking fitting installed in a 3/4" ball valve. It was on the return side of the smaller of two zones. I tried removing the brass fitting from the valve but, I couldn't get it out of the ball valve. There were circuit setters on the supply side of both zones and, they were both set to the "fully open" position. What do you think was the reason that this reducing fitting was used?

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Mike T., Swampeast MO

Would guess for flow reduction/balancing. That way the ball valve could be [properly] used either fully closed or fully opened. Looks sort of the like restrictor plates in the radiator hand valves of old gravity systems.

Unknown

That's what I thought Mike. But,,,

Both baseboard heating circuits had circuit setters on the supply side! The smaller zone (this was connected to) was about 1/3 the length of the other. I nearly burst my cheeks blowing through this zone :-O

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ScottMP

Any chance

its the end of a fitting brush ??

Would'nt be the first time.

Scott

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Unknown

LOL.. Where did that thing go?

It's not the end of a fitting brush. It was made of cast brass and I tried to pull it out of the valve for documentation but, it wouldn't come out. I ended up breaking off all of the 3/4" female sweat cast brass. I thought i'd share it with the Wallies as I've never seen anything like this in a forced hot water circulation system before.

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bob_44

Nickel

Gary, are you working anywhere around Mark Eatherton, I remember he likes to stuff nickels with a hole in them into the piping. bob

hr

I thought of Eatherton right off, also

maybe some of his handy work from a past lifetime.

hot rod

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