The largest valve in the world 1910

Rick A · **Posted:** Thu Jul 16, 2020 12:09 pm

Power and the engineer article from 1910

nedsn3 · **Posted:** Fri Jul 17, 2020 12:18 pm

Fascinating. Thanks for posting. Ned

Bad Order · **Joined:** Sun Jun 23, 2013 1:16 pm **Posts:** 231

What are the chances that those valves are still in operation?

Some great slide rule engineering going on back then.

You only get one chance. After it's in and the water builds up behind the dam, there is no taking it out to "redo" it.

Rick A · **Posted:** Mon Jul 20, 2020 10:38 am

The 1899 Chapman Valve catalog. Enjoy.

https://archive.org/details/cataloguean ... pman+valve

And the 1888 catalog.

https://archive.org/details/cataloguega ... pman+valve

And a little history.
http://www.firehydrant.org/pictures/cha ... alve%20Mfg.

choodude · **Joined:** Wed Jun 29, 2016 11:58 am **Posts:** 327

Bad Order wrote:

What are the chances that those valves are still in operation?

The original Kingsbury thrust bearing from 1912 is still in service at the Holtwood hydroelectric plant on the Susquehanna river in southern Pennsylvania.

https://www.kingsbury.com/about_us

https://en.wikipedia.org/wiki/Holtwood_Dam

Brian

Rick A · **Posted:** Tue Oct 13, 2020 1:26 pm

Another "big one". A shaft for the Boston Elevated Railway from the December 1899 edition of Steam Engineering. 65,000 pounds!

Rick A · **Posted:** Sun Feb 28, 2021 11:54 am

Another big one.

https://envirotecmagazine.com/2017/05/0 ... e-project/