garfio
Mechanical
- Jul 17, 2005
- 86
NFPA 58 allows pilot operated relief valves for vessels with LPG, under certain circunstances, if the pilot is "self-actuated, direct, spring-loaded pilot valve".
I could not find a reference to what the word "direct" means in this context. Does anybody know what is the correct interpretation of "direct"?
My particular doubt is if this precludes the use of pilot with remote sensors. Any idea?
I could not find a reference to what the word "direct" means in this context. Does anybody know what is the correct interpretation of "direct"?
My particular doubt is if this precludes the use of pilot with remote sensors. Any idea?
