Boiler fitting advice Aug 17, 2021 11:40:05 GMT
Post by darrene on Aug 17, 2021 11:40:05 GMT
I'm sorry if these are daft questions. I'm (understandably I hope) apprehensive when it comes to the possibility of pointing drills near boilers, even if it's to tap the wrapper.
I have a nicely made boiler for my project Brittania which has passed a 180psi hydraulic test and I'm looking at the installation and fittings aspects.
As it stands, it has the following accesses
On the backhead
A pair of 1/4 x 40 bushes for the water sight glass
1off 1/4 x 40 bush at the bottom right. For a blowdown valve or a feed clack valve?
A tapped/no bush regulator hole
A tapped/no bush 1/4 x 40 hole top right of the backhead, level with the regulator hole. I wonder if this was originally for the blower pipe, however there is no corresponding hole on the front plate of the boiler
On the top
A pair of 3/8 x 26 safety valve bushes
undrilled steam dome ring
A 5/6x32 manifold bush
On the front
A tapped/no bush regulator hole.
The usual top/side mounted water feeds are not present Is it uncommon to fit bushes for these and the blower after an initial shell test? LBSC seems to indicate it's not going by the construction notes. I feel like I would probably want to avoid fitting bushes to it now that it's tested well unless it's unavoidable. It'll probably need to be though, to accomodate the axle pump and injector feeds.
I was wondering how best to accomodate the fittings if I could work with it as it stands;
Live blower outside of the boiler, fed by the manifold
Pressure gauge from the manifold
Whistle from the manifold
injector steam feed from the manifold
Axle, hand pump and injector feeds - possibly one can use the bottom right bush
blowdown valve probably needs to be in the usual position towards the front of the firebox, as it's the lowest point.