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Live steam Globe valves

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Ron Hancock05/07/2017 11:29:44
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526 forum posts
95 photos

hi can anyone suggest a good steam Globe Valve. I have bought several from different suppliers but seem to seal for a very short time. I need a 3 1/6 pipe fitting to supply my Injector had new one fitted only two weeks ago it's already seeping

Ron

steamdave05/07/2017 11:47:16
526 forum posts
45 photos

Have you tried the PM Research globe valve? 1/4" x 40 thread available from Forrest Classics
http://www.forest-classics.co.uk/pm_research_sw-4.htm#Globe%20Valve

or if you fancy machining your own from castings, have a look at PMR
https://www.pmmodelengines.com/shop/pipe-fittings/globe-valve-kits/

They are easy to make up.

Dave
The Emerald Isle

JasonB05/07/2017 11:49:04
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25215 forum posts
3105 photos
1 articles

Ron, most globe valves have a right and wrong way round. You need to get them in the right. see here right way round for steam

 

J

 

Edited By JasonB on 05/07/2017 12:23:11

Henry Artist06/07/2017 09:12:51
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121 forum posts
46 photos

I have found the valves supplied by GLR Kennions to be very good quality. **LINK**

Sometimes, after a lot of use there can be a tiny leak at the valve stem but it is a simple matter to replace the graphite string packing. You may also like to experiment with O rings.

Alternatively, you may want to try the valves sold by Bengs Modellbau. **LINK**

They are made by Winfried Niggel and are rated to 6 bar.

Greensands19/11/2020 17:22:54
449 forum posts
72 photos

Can anyone please expand on the idea that a globe valve has right and wrong way around. The link given in a previous post is now dispslaying the dreaded "404 Not found" messag

J Hancock19/11/2020 17:31:11
869 forum posts

Pressurised side is under the disc, so that given a reasonable shut-off , the valve spindle packing can be changed

safely when fully closed.

Harry Wilkes19/11/2020 17:45:00
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1613 forum posts
72 photos

Beware with PM fittings quality very good but threads are to US standards

H

Harry Wilkes19/11/2020 17:47:47
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1613 forum posts
72 photos

As posted by Greenlands your link brings up a page error

H

Posted by JasonB on 05/07/2017 11:49:04:

Ron, most globe valves have a right and wrong way round. You need to get them in the right. see here right way round for steam

J

Edited By JasonB on 05/07/2017 12:23:11

mechman4819/11/2020 22:17:43
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2947 forum posts
468 photos

Hi Ron, think along the lines of.. steam moves along the pipe from the boiler, then goes UP against the bottom of the disc, which lifts & allows steam over the top of the weir & into the discharge line of the valve... think 'along - up & over - along'. I know from my time repairing valves that industrial valves have an arrow to show the flow direction cast in the body & so which way the valve should be fitted. Google 'globe valve diagrams'.

George.

mechman4819/11/2020 22:22:18
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2947 forum posts
468 photos

Look here..

https://www.google.co.uk/imgres?imgurl=https%3A%2F%2Fi.pinimg.com%2Foriginals%2F01%2F82%2F09%2F018209fc0310de4aba6988e707ff41f0.jpg&imgrefurl=https%3A%2F%2Fwww.pinterest.com%2Fpin%2F410601690997845959%2F&tbnid=KyYe-nMxxdGCPM&vet=12ahUKEwiOpbqm0o_tAhVLZxoKHVuUBiIQMygEegUIARDmAQ..i&docid=vRVFOXdTsNw-oM&w=1749&h=1304&q=globe%20valve%20diagram&ved=2ahUKEwiOpbqm0o_tAhVLZxoKHVuUBiIQMygEegUIARDmAQ

George.

Edited By mechman48 on 19/11/2020 22:24:53

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