Ladies and Gentlemen,
I am aware of the general purpose of the overflow tube of my injectors.
My question is if air entering the tube from below, in any circumstantials can mix with the water being pressed into the boiler? My Britannia 7¼" has two injectors below the cab floor.
Thanks for your information — Regards,
Göran
Injector question
- GORAN ROSEN
- Posts: 7
- Joined: Tue Jun 12, 2018 1:52 pm
- Location: Sweden
- Contact:
Re: Injector question
There is a check valve in the overflow line, which closes from the vacuum created by the injector when it “picks up” (begins putting water in the boiler). If the check valve is leaking, letting in air, then usually the injector fails.
Also, if there is an air leak in the water feed line, this will also cause the injector to fail.
Also, if there is an air leak in the water feed line, this will also cause the injector to fail.
Last edited by Fender on Mon Jun 03, 2019 5:14 pm, edited 1 time in total.
Dan Watson
Chattanooga, TN
Chattanooga, TN
-
- Posts: 582
- Joined: Tue Jul 31, 2012 1:59 pm
- Location: Germany, Duesseldorf
Re: Injector question
Hello Göran,
Don't worry! That's not an issue due to the energy needed to compress and feed the air into the boiler.
Look, even any minor leakage (of air) within the water supply from the tender will break delivery of the injector.
Asteamhead
Don't worry! That's not an issue due to the energy needed to compress and feed the air into the boiler.
Look, even any minor leakage (of air) within the water supply from the tender will break delivery of the injector.
Asteamhead
Re: Injector question
The usual source of oxygen in the feedwater is from “dissolved” oxygen already in the water. This can be removed chemically, such as with sodium sulfite, or by heating the water before it goes into the boiler, to reduce its solubility for gases.
Dan Watson
Chattanooga, TN
Chattanooga, TN