Fitting for injector pipework

[Michael CallaghanParticipant @michaelcallaghan68621]

Hi, maybe a long shot. It looks like the injector pipe work needs to go through the running board. I would if possible like to put a pipe connector through the running board so that the pipe work from the clack valve which is on top of the boiler can then run to the running board connector and then the be removed in one section with the further section running below the running board to the injector being a second section. Does anyone have drawings of a small nice looking connector that they could send me. This is for a 5 inch royal Scot. Thanks

[Nigel Graham 2Participant @nigelgraham2]

No, not that way.

 

As a general point the fewer the joints in any pipes the better, and never bulkhead unions (which are what I think you mean) through cab sheets, footplates and running-plates. They should apply only for functional connections through the walls of vessels such as water-tanks and smokeboxes.

Run such the pipes down nice and close to the cladding and the frame-plate below that, through holes neatly slotted to the inside edge of the sheet, or a discreet rectangular cut-out shared by two or more pipes – with due regard of course for the locomotive’s appearance.

The platework can then be slide sideways to remove it without needing disturb any pipes to do so.

I think fittings like cab-mounted brake controls bolted to the platework have their unions though clearance holes in the plate, but the union itself is not fastened directly to the plate.

[Dave WoottonParticipant @davewootton]

Hi Michael

Looks Like yours must be a rebuilt Scot, where the injector pipework does pass quite prominently through the running plate just aft of the nameplate. There is quite a tight elbow where it passes through, not ideal for injectors. I have got around a similar problem by using a lost wax cast elbow for a vacuum pipe sold by a company called 17d silver soldering pipe in one side and screwed fitting the other. Had to ask to buy just the 3/16 elbow, but it did come out neatly (this wasn’t for an injector) Can’t photograph it as everything packed up for imminent house move. Alternatively could run injector pipes more directly, perhaps even inside the frames, which would give a much better pipe run. And make the visible pipe on the running board as dummies. The nameplate could hide a multitude of sins and avoid any sharp bends in the injector pipework. Just had a look and EKP supplies sell a little casting of elbows which could be useful, listed under Kennions misc castings.

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