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| Prime auto protection valve https://www.rypn.org/forums/viewtopic.php?f=1&t=20067 |
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| Author: | John Bohon [ Sun Mar 05, 2006 10:10 pm ] |
| Post subject: | Prime auto protection valve |
A friend of mine doing research on Western Maryland pacifics found an AFE from 1938 stating some of the engines were being equiped with a Prime auto protection valve. This is a new one on me. I suspect it may be a drifting or by-pass valve but those are only guesses. Does anyone know what this valve is and does? Thanks in advance. John Bohon |
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| Author: | John Bohon [ Tue Mar 07, 2006 8:58 pm ] |
| Post subject: | Re: Prime auto protection valve |
I am just bringing the topic back to the top in hope that someone will know what a Prime auto protection valve is. Thanks. John Bohon |
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| Author: | Mike Tillger [ Tue Mar 07, 2006 11:21 pm ] |
| Post subject: | Re: Prime auto protection valve |
It is a cylinder cock that incorporates a relief valve, which in the case of large amounts of condensate in the cylinders will open automaticallyand relieve the hydraulic pressure before it can do any damage, sort of like a safety valve for cylinders. |
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| Author: | John Bohon [ Wed Mar 08, 2006 9:23 pm ] |
| Post subject: | Thanks Mike |
I thought it must have been a cylinder cock, drifting valve, or bypass valve of some kind. Thanks for your help. John Bohon |
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