is longer better?
Posted by: (---.dyn.iinet.net.au)
Date: April 25, 2010 07:56PM
In spite of the aluring heading, it really is a mundane question.
I am in the throes of final assembly of my Locosurrey and have the choice of 3 gauge glasses.
the first is the standard original type with the open glass.
the second is a new reflex type supplied by the wonderful people at Goolds (viewing window about 4 inches long)
the third is also a reflex type, with a klinger glass with a viewing window of about 10 inches.
Now, obviously the third, allows me to see the water level over a much wider range, (with the boiler only being 13 inches top to bottom)
but (a) is it necessary? (b) too large a heat loss? (c) unnecessary?
I obviously WANT to run the boiler with the correct water level, for which the Goold supplied unit would be fine, and I will be installing a try cock tower under the rear seat, but wonder if the paranoia I suffer, should the level fall blow the visible level on the smaller unit... would be substantially reduced by using the longer unit?
Could useres of smaller boilers, 14inch and 16 inch units advise me of the water usage levels (and the related effect on gauge glass levels), am I being overly
worried with a very gentle movement being the usual, or with the fairly small volume of water in the boiler does this mean that there can be a quick effect upon gauge glass level?