pressure govenors vs pressure relief valves
This didn't get much response in the engineers forum so I thought I'd try it here.I recently switched departments and went from apparatus equipped with pressure regulators to apparatus with pressure relief valves. I think that i like the pressure regulators more (alot more) but this may be becuase I have spent so much more time with them and therefore am more comfortable with them. What I am looking for is for folks to compare and contrast the advantages and disadvantages of each. Most of the people I currently work with have only used pressure relief valves and can't justify their use over pressure regulators. To me the pressure relief valve is old technology. With the pressure regulator the changes in engine rpm as lines are open and closed give me as an operator a much clearer idea of what is going with my lines. This combined with the engines ability to throttle engine speed down when transferring from tank water to the hydrant make the pressure regulator the obvious choice when specing new apparatus. Not to mention the ability to throttle up to support additional lines as they are placed in service.I would appreciate any info.