Live steam Globe valves

[Ron HancockParticipant @ronhancock63652]

[Ron HancockParticipant @ronhancock63652]

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

[steamdaveParticipant @steamdave]

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

[JasonBModerator @jasonb]

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 ArtistParticipant @henryartist43508]

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.

[GreensandsParticipant @greensands]

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 HancockParticipant @jhancock95746]

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 WilkesParticipant @harrywilkes58467]

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

H

[Harry WilkesParticipant @harrywilkes58467]

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

[mechman48Participant @mechman48]

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.

[mechman48Participant @mechman48]

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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