How to Change a Boiler Sight Glass - Boiling Point

Learn how to change a boiler's sight glass today on the Boiling Point.
Today on the Boiling Point, Boiler University instructor Jude Wolf goes through the process of replacing a boiler sight glass. If you ever see a leak or drip around the boiler sight glass it is time to change it and it's gaskets. Learn how to cut sight glass as well as install sight glass on the boiler.
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[@hubert187]

Great video, probably the cleanest boiler room I've seen. I need to learn how to cut/install insulation. Every time we have a repair in the boiler room, our insulation is not replaced.

[@wuudw2hollotyps703]

Thank you for airing this video! Great shared knowledge as always!

[@nicsye12]

Great video. Love this level of detail

[@wareboilers]

Thanks for watching!

[@nobull8544]

You forgot the the brass washer, upper and lower, that prevents the new seal from being pressed into the steam and water valves.

[@SidneyAnderson36]

My absolute favorite resource

[@DavidVazquez-vi6sb]

Great 👍 I loved to get this knowledge. Thanks a lot.

[@elemental3252]

Thank you

[@richardlindquistjr]

This is very helpful thank you

[@wareboilers]

Glad it was helpful! Be sure to check out the rest of our channel as well.

[@g12196]

Any add’l tips on how to get the sight glass to stop leaking? I had replaced the entire setup, top/bottom valves, gaskets, washer and sight glass and still had leaks. I’m going to incorporate some of what you put in this video, but how about getting the glass lined up correctly when you change out valves?

[@nickledimez4012]

Thanks!

[@hassannajjar4915]

Great Video, where do you buy the Glass, washers and the tool from? Need to change the sight glass on my steam boiler.

[@ConfusedAstronomicalMode-xj2nz]

Great I thought it had the same purpose

[@omarmariscal7777]

Buenas tardes , si se abre la purga dela mirilla y lógico se queda sin agua para poder reemplazarla, inmediatamente se activa la bomba del tanque de condensados al detectar que se está bajando el nivel del agua ; entonces si se apaga la bomba para poder maniobrar la mirilla al momento de volverla a activar el generador de vapor se alarmara o hay que apagar también el generador de vapor para poder cambiar la mirilla ?

[@cocoyitdang7871]

Very specific excellent demonstration if how to change boiler sight glass and a big 👍👍👍👍👍👍👍👍

[@blackgoldgrind]

Good

[@ericjohnson9631]

Great Video! Whats the name of the cutter used?

[@wareboilers]

Thanks for watching! You can find the glass cutter here www.boilerwarehouse.com/products/gauge-glass-efi-wc

[@nickledimez4012]

Can you change the site glass while the boiler running? Hi pressure boiler?

[@stagg2158]

I am no expert but I don't believe that you can because the site glass contains water and the water valve and steam valves has to be turned off to change the site glass valve and the boiler can't be on