There is a reason for it...dougrail:82074 wrote: For some reason, the standard boilers and superboilers [IPE, DS, RWM, PPS, (Chaney?)] have different threads.
*Insert image of someone accidentally fitting 40psi safety valve into 26psi boiler...*
Exactly that. But surely the sight glass window might blow first?DolwyddelanLightRail:82080 wrote:There is a reason for it...dougrail:82074 wrote: For some reason, the standard boilers and superboilers [IPE, DS, RWM, PPS, (Chaney?)] have different threads.
*Insert image of someone accidentally fitting 40psi safety valve into 26psi boiler...*
dougrail:82079 wrote:
Dan, as an offtopic, very quickly, if you can make water topups in 25mins, may I ask how long it took to make the custom domes NarrowM and I have?
Chris Cairns.Mamod Handbook 16mmNGM Yahoo Group wrote:Some modellers have reported a hydraulic pressure test on a Standard Mamod boiler, where the sight glass developed a leak at 120lb/sqin, sealing again at when the pressure was reduced to 60lb. This would appear to indicate that the boiler is quite safe for use at 25lb/sqin, and possibly up to 40lb.
Thanks Chris!Chris Cairns:82095 wrote:Peter if you scroll down to my 8th posting on this Topic you will see some photos and a diagram explaining this problem - http://gardenrails.myfreeforum.org/Buil ... t6201.html
If you are starting with a paint stripped boiler it is easier and I take the opportunity to solder around the top boiler inserts as well, then use a file or some fine wet & dry sandpaper to clean up the excess solder.
If you are doing it on a new boiler then remove as much paint around the tube end as you desire, then roughen up the bare brass surface with some sandpaper, applying flux and heat up, then use a silver bearing plumbers soft solder (not silver solder) around the tube end. Clean up the excess solder with a file or some fine wet & dry sandpaper, and you will need to open up the bottom slot in the front face of the combustion chamber so you can push the soldered tube end through.
Hope the above instructions make sense.
Chris Cairns.
Sam if you look at the Dream Steam 'Steam Regulator Kit' (zoom the photos) you will see they provide a plug which has an 'O' ring on one side (to go into the top of the tube), and you use the standard spring to hold this plug down against the inside of the steam dome.Lner fan Sam wrote:I will be fitting a incab regulator so will need to plug that hole. What would you do guys?
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