|
|
Post by albert on Mar 17, 2008 15:52:07 GMT
Hello All,
Can some one please put me to where I can study the make up /designe of the valve gear for a single cylinder steam weir water pump fitted with a piston operated shuttle valve.
My problem- does the pilot valve give steam only to operate the piston valve?
The only drawing I have to my thoughts is in-correct.
Thank you Albert
|
|
|
|
Post by baggo on Mar 17, 2008 17:15:57 GMT
Hi Albert,
I've found a detailed description of the operation of the Weir pump in Model Engineer issue 840 and as you suggest, the shuttle valve only provides steam to operate the main valve. The main valve then controls the steam and exhaust for the pump cylinder.
If it would help I can try and scan the article for you and send you a copy. The pages are a bit yellow (well, they are 90 years old!) so may not scan too well.
There was also an article in ME issue 2509 describing the construction of a model Weir pump.
John
|
|
lancelot
Part of the e-furniture
Posts: 471
|
Post by lancelot on Mar 17, 2008 17:41:37 GMT
|
|
|
|
Post by albert on Mar 17, 2008 19:09:48 GMT
Hello Baggo & Lancelot.
The web pages look interesting thank you ,I will look at them deeper later.
Baggo,The drawing I have is fro M/E 3456-5th. Jan 1973. I may have the M/E you mention, can you please send the date's of the mags. You have answered my question in your reply.
Thank you both for a quick and very helpful reply
Albert.
|
|
|
|
Post by Tel on Mar 17, 2008 19:18:29 GMT
Also, there was a series on building one in AME about 2004
|
|
|
|
Post by baggo on Mar 17, 2008 20:36:16 GMT
Hi Albert,
the description of the Weir pump is in ME volume 36, issue 840 which is May 31st 1917.
The description of the model is in volume 100 issue 2509 which is June 31st 1949.
John
|
|
|
|
Post by albert on Mar 18, 2008 9:07:43 GMT
Hello John,
Thank you for the info,much appreciated. Have not seen AME?
Albert
|
|
Myford Matt
Statesman
There are two ways to run a railway, the Great Western way, and the wrong way.
Posts: 621
|
Post by Myford Matt on Mar 18, 2008 9:55:46 GMT
Wasn't the AME or a similar one repeated in EIM two or three years ago?
Matt
|
|
|
|
Post by albert on Apr 7, 2008 19:31:45 GMT
To all who answered my request for help,thank you all very much.
I have had my pump running on less than 5lbs. air pressure and drawing a good vacuum on the water side.
Role on the T/E rallies so I can try it on steam.
Thank you Albert.
|
|
cotswold
Part of the e-furniture
Still testing the water
Posts: 307
|
Post by cotswold on Apr 8, 2008 7:22:34 GMT
To all who answered my request for help,thank you all very much. I have had my pump running on less than 5lbs. air pressure and drawing a good vacuum on the water side. Role on the T/E rallies so I can try it on steam. Thank you Albert. Which version/model/drawing did you use in the end? |
|
|
|
Post by albert on Apr 8, 2008 8:59:56 GMT
Hello Cotswold,
I had found a not very explicit drawing in M/E 3456 8 Jan. 1973.It was looking at these drawings that made me ask in this forum for advice.
As I had a ready machined cyl.and ports I have to redesigned the valve layout ,used a sandwich port face- crossed the ports (valve drives the opposit cyl. to what you would expect) and direct valve drive to elimenate a rocking lever.
Bye Albert.
|
|
