steam pressure gauge

Unknown

that comes with the boiler is meant to indicate an emergency situation, not low end pressure measurements.

If your boiler fails to shut off, like if the pigtail were plugged and someone took the thermostat and turned it up ten degrees, what would your new guage read after the pressure passed 15 PSI, the safety relief valve setpoint? What would it read if the pressure hit, let's say, 25 PSI? (the guage should be on a different pigtail, or no pigtail, if the guage is rated for it)

Your OTHER guage is required by code on the BOILER. You can put a SYSTEM pressure guage on in addition, if you like. Just don't make the boiler unsafe by removing the code required guage.

Noel

gfe

steam pressure gauge

weil mclane 400,000 btu boiler about 15 yrs old. presure gauge was 0-30 and would never register any pressure. on same "pig tail" with gauge is a honeywell pressuretrol with cut in at 2psi and differential set at 1psi. I changed the pressure gauge to a new marshalltowne with a 0-10 face in .1 psi increments. when the boiler cycles I get no reading on gauge (the needle doesn't even budge!). could it be the pigtail is clogged? but that would mean even the pressuretrol is not working (and I'm not sure its working either now). the boiler does ok job of heating but cyles every 15minutes and stays on about 2 mins. But still, why no reading on gauge? (When I took the old gauge off there was a black residue on stem, but when I "blew" into gauge the needle would move. thanks

gfe

correction: differential is set at 2, not 1

gfe

ok..so I put the old 0-30 gauge back on the same pigtail with the pressuretrol? (and don't bother with a gauge to tell me what the actual pressure is?). If I were to use the 0-10 gauge on a different pigtail where would I put it? I don't see anywhere to access the boiler body. thanks

Unknown

Putt a tee in

below the pigtail, and branch out and up from there.

If you have a 67 LWCO, there's tappings in the top of them, too.

Noel