Ron Hancock | 05/07/2017 11:29:44 |
![]() 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 |
steamdave | 05/07/2017 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 or if you fancy machining your own from castings, have a look at PMR They are easy to make up. Dave |
JasonB | 05/07/2017 11:49:04 |
![]() 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 Artist | 06/07/2017 09:12:51 |
![]() 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. |
Greensands | 19/11/2020 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 Hancock | 19/11/2020 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 Wilkes | 19/11/2020 17:45:00 |
![]() 1613 forum posts 72 photos | Beware with PM fittings quality very good but threads are to US standards H |
Harry Wilkes | 19/11/2020 17:47:47 |
![]() 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
|
mechman48 | 19/11/2020 22:17:43 |
![]() 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. |
mechman48 | 19/11/2020 22:22:18 |
![]() 2947 forum posts 468 photos | Look here.. George. Edited By mechman48 on 19/11/2020 22:24:53 |
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