Login
or
Register
Home
»
Trains Magazine
»
Forums
»
General Discussion
»
844 steam release
844 steam release
554 views
6 replies
Order Ascending
Order Descending
Hugh Jampton
Member since
September 2003
From: Southern Region now, UK
820 posts
Posted by
Hugh Jampton
on Thursday, May 12, 2005 9:42 PM
if you'd have put the picture up to begin with we could have all seen that it's a blow down valve.
Generally a lurker by nature
Be Alert
The world needs more lerts.
It's the 3rd rail that makes the difference.
Reply
athelney
Member since
May 2003
From: Abbotsford BC Canada
300 posts
Posted by
athelney
on Thursday, May 12, 2005 7:52 PM
Would have to agree that it's a blow down valve -- we have similar on CPR # 2860
2860 Restoration Crew
Reply
dldance
Member since
August 2003
From: Near Promentory UT
1,590 posts
Posted by
dldance
on Thursday, May 12, 2005 1:28 PM
I suspect it is a boiler blowdown valve mostly used for clearing mud and scale out of the boiler. Some of the chemical additives to soften the water produce a percipitate that needs to be cleaned out periodically - otherwise it interfers with steam production.
dd
dd
Reply
Anonymous
Member since
April 2003
305,205 posts
Posted by
Anonymous
on Thursday, May 12, 2005 1:12 PM
Nope I know what cylinder cocks are
http://www.trainshots.us/gallery/Steam/P5050061?full=1
http://www.trainshots.us/gallery/Steam/P5050052
Steam came out of here
Reply
Edit
jchnhtfd
Member since
January 2001
From: US
1,537 posts
Posted by
jchnhtfd
on Thursday, May 12, 2005 12:55 PM
and they make a great show for the fans watching the engine, too!
Jamie
Reply
Hugh Jampton
Member since
September 2003
From: Southern Region now, UK
820 posts
Posted by
Hugh Jampton
on Wednesday, May 11, 2005 10:36 PM
I think you're on about the cylinder cocks. They're mainly used to allow any water that has condensed out from the steam to be drained off to prevent hydraulicing. They're mainlky opened when the loco is stationary. If the throttle is opened while the cocks are open then steam flows through the cylinders and out the pipe, producing a great horizontal plume of steam.
Generally a lurker by nature
Be Alert
The world needs more lerts.
It's the 3rd rail that makes the difference.
Reply
Anonymous
Member since
April 2003
305,205 posts
844 steam release
Posted by
Anonymous
on Wednesday, May 11, 2005 8:16 PM
Greetings
I am curious about the valve on the fireman's side of the 844 up near the front of the firebox. I have seen an image recently of steam shooting out of this valve about 20-30 feet out. There is a handle that is pinned down when its closed. What is this valves particular function.
thanks
Reply
Edit
Join our Community!
Our community is
FREE
to join. To participate you must either login or register for an account.
Login »
Register »
Search the Community
Newsletter Sign-Up
By signing up you may also receive occasional reader surveys and special offers from Trains magazine.Please view our
privacy policy
More great sites from Kalmbach Media
Terms Of Use
|
Privacy Policy
|
Copyright Policy