Porter Throttle Question

OLCO107 · **Posted:** Fri Jan 30, 2015 12:36 pm

Kelly, I'll look at the throttle from our NG Porter #17 [ex United Fruit, Bananera Guatemala] tomorrow. In prep for someday a new boiler, we torched the side off the dome and removed the throttle several years ago. The details now escape me. The throttle casting seems huge for a 22 Ton engine.

Russ Fischer · **Posted:** Sat Jan 31, 2015 12:43 am

Kelly, I have seen a couple of boilers where the throttle standpipe/elbow were attached to the dry pipe with a stud through the elbow and a nut that had to be removed by running a socket in through a washout plug hole in the back head. I can't tell from the photo if that is how this one is put together or not.

Russ

Rick Rowlands · **Posted:** Sat Jan 31, 2015 9:53 am

This is how the throttle valve is attached to the dry pipe on the J&L 58. Looks a little different than your setup. This is from c/n 7245 built in 1938.

sandiapaul · **Posted:** Sat Jan 31, 2015 9:54 am

Maybe ask Stathi, he has had his Porter("The Chiggen") all apart.

Kelly Anderson · **Joined:** Tue Sep 14, 2004 7:52 am **Posts:** 2477

whodom · **Posted:** Sat Jan 31, 2015 12:36 pm

Hopefully you can get to it as Russ suggested above. Of course, you may have to use every 3/4" drive extension in the shop and buy a couple more to reach it!

Russ Fischer · **Posted:** Sun Feb 01, 2015 10:02 am

There should be a washout plug in the back head that lines up perfectly with this stud. If the nut comes loose fairly easily, getting it off should not be too much of a problem. Getting the nut started again might be a bit of a trick shot.

dinwitty · **Joined:** Wed Oct 22, 2008 8:18 pm **Posts:** 2226

I can't tell if this is in or outside the boiler, but thinking how the large pipe is mounted, theres an exterior mount connection, then theres this bolt running thru the pipe to hold to a threaded mount inside the pipe which would have to be "holed" that lets steam thru while securing the pipe.

your trying to remove this pipe? Thats a wild arrangement of levers there.
I had this crazy thought if you can't get it out, throw a fire in it let it cook some heat for a bit. Unless you can localize some heat around it.

Kelly Anderson · **Joined:** Tue Sep 14, 2004 7:52 am **Posts:** 2477

dinwitty · **Joined:** Wed Oct 22, 2008 8:18 pm **Posts:** 2226

that may be one short of one break to failure. Its good thats caught. Check the holding threads. Because of mountings it would not fall right off tho but if the engine is in forward/reverse uncontrolled steam is passing thru. Because of the photo I thought it was bigger. Congrats on getting it out. The 765 tender pin wasnt so easy (thud) hehe rusto....