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boiler parts

unknown useage

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Philip Burley08/06/2019 18:24:58
136 forum posts
3 photos

3.jpgcan anyone please tell me what this is for ? it came with a box of boiler parts . Some sort of valve ? But with no outlet , and should there be a ball to seat on the conical part ?

Paul Kemp08/06/2019 18:46:18
313 forum posts
14 photos

Difficult to be sure with the size of the picture but it looks like it should be a captive blow down valve. Ball goes in the shroud at the end of the spindle which gets forced onto the seat in the body when the spindle is tightened. Back nut is to stop you screwing it all the way out!

Paul.

Philip Burley08/06/2019 19:01:35
136 forum posts
3 photos

hello , sounds about right , but where does the water / steam exit ?

Paul Kemp08/06/2019 19:13:27
313 forum posts
14 photos

Through a hole and pipe extension off the side, not yet drilled and fitted! Looks like it was left once the turning was completed and never finished!

Paul.

3404608/06/2019 19:20:30
774 forum posts
4 photos
Posted by Paul Kemp on 08/06/2019 19:13:27:

Through a hole and pipe extension off the side, not yet drilled and fitted! Looks like it was left once the turning was completed and never finished!

Paul.

Spot on. I have an identical fitting - the locknut is just a belt and braces fittings.

Bill

Philip Burley08/06/2019 19:51:11
136 forum posts
3 photos

Oh , I see now !!!! Its not finished , No wonder it had me foxed Would this be a home made fitting then ? , Thanks everyone ( again !!)

regards Phil

3404608/06/2019 20:26:52
774 forum posts
4 photos

I would say a well made home fitting - incomplete.

If you go to Maidstone engineering site and put in blow down valve you will see finished item

Just needs a small outlet tube on the large round body.

Bill

3404608/06/2019 20:33:26
774 forum posts
4 photos

blowdown_valve-600x600_1 (1).jpg

Boiler Bri08/06/2019 21:23:53
avatar
806 forum posts
285 photos

i agree with 34046 Blow down valve. Ball missing from the seat.

B

David Wasson08/06/2019 23:46:56
avatar
126 forum posts
36 photos

Here's the parts for a complete valve of this style:

dscn1356 - reduced 1.jpg

Here it is installed:

dscn1474 - reduced.jpg

If you add an O ring on the valve spindle just under the retaining nut, you will not get any steam blowing out around the spindle when you blow down. Just make sure you open the valve enough to squeeze the O ring.

Peter Krogh09/06/2019 03:05:00
avatar
212 forum posts
20 photos

Don't drill for the exhaust until you've screwed it into place and marked which way it should point. No shimming to get the thing clocked.

Pete

David Wasson09/06/2019 04:21:55
avatar
126 forum posts
36 photos

Good tip Pete! In fact, the same goes for all fittings that screw into something and must have a specific orientation.

Philip Burley09/06/2019 13:49:35
136 forum posts
3 photos

fittings.jpgIn the same box were these bits , found out the water gauge is a very expensive part ! I take it the others are injectors ?

David Wasson09/06/2019 13:58:38
avatar
126 forum posts
36 photos

Yes, the two fittings at the top of the photo are for a water gauge. The two fittings in the lower half of the photo, I am not sure what they are. If they are injectors, they are unlike any that I have seen. No doubt someone else will be able to identify these.

3404609/06/2019 15:15:16
774 forum posts
4 photos

Could you possibly upload two larger photos of the bottom two items please ?

Bill

Philip Burley09/06/2019 17:04:43
136 forum posts
3 photos

partsI was told these are injectors , never having seen an injector I don't know

3404609/06/2019 17:38:49
774 forum posts
4 photos

The injectors I have are all 4 connections - steam in, water in, water out and overflow.

It could well be the three threaded parts are water in and out and steam and the overflow may be just a hole that I cannot see in the photo? My overflows are not a threaded connection but just a small copper tube soldered in place.

Sorry cannot be more help.

Bill

John Baguley09/06/2019 18:32:19
avatar
429 forum posts
46 photos

To me, they like as though they could the bottom fittings of more water gauges. The larger diameter threaded stub has a flat bottom recess which would take the bottom end of the gauge glass. The long threaded stub would thread into the boiler and have a locknut to secure in position once lined up. The tufnol? headed spindles could be shut off valves.

They seem to be lefthand and righthand fittings of a matched pair.

Could be totally wrong of course!

Have you got a photo of the other side of the fittings?

John

Philip Burley09/06/2019 19:39:16
136 forum posts
3 photos

John , I am sure you are right , now I have lined them up a different way , they must me water gauge fittings . Missing the unions for the glass glands and missing the valve needle for he drain . They both have steam shut off valves . . They seem a bit complicated though . They might be OK for a small boiler

thanks everyone Regards Phil

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