I guess the first thing to ask is what is the definition of class 1 division 2? 
 Are UL or FM listings equivalent? Or is there another listing agency listing 
another product for the same application I should be aware of?
Are the brass body valves showing signs of corrosion?  Are they inoperable in 
their current condition?  Are the pressures shown on the gauges not consistent 
with anticipated readings in the area? If they can't answer these questions, it 
would appears that some one is trying to have some "job security".... 

Sent from my iPhone

On Mar 17, 2013, at 12:24 AM, "A.P.Silva" <[email protected]> wrote:

> I had an electrical contractor commenting on a sprinkler tree, as following:
> 
> "The tamper switch and low flow switch are not rated for Class 1 Division 2
> applications. Also, the brass body valve and gauges should also be
> replaced".
> 
> Anyone know what he is talking about?
> 
> Tony
> 
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