Boiler protection valve at work

hot_rod

I piped and ran this today. Supply from boiler to hrydro sep, hydro sep to 280 valve with 26-99 flowing about 10.4 gpm.
I have both Quicksetter flowmeters and a sight glass to observe flow movement.

I have a 130F cartridge, it has an 18°differential. So at 138, it should have the bypass port closed, 100% flow to the system.
There is a very short period where you can see flow both across the valve and through the system. My loop is very short so this condition only lasts seconds. On a bigger load system I would expect that condition of flow in the valve and system to be longer.

For Eric, the pump never changed sound regardless of what position the valve was in.

PeteA

wow that's awesome!! great demonstration mockup.

OldawgBryant

@hot_rod what is the pipe size 1"? That is a good set-up.

hot_rod

1" copper, and some pex