Sorry for what's probably a rookie question, but I just started this new contract and I have to get up to speed on this quickly. I need to understand the difference between Explosion Proof, Intrinsically Safe, Class 1 Div 1, and Class 2 Div 2. Let's say I have to specify some Control Valves for a customer, how do I know if they must be Explosion Proof etc? Is this something the customer must tell me? Let's say they are going in an area where I think there is combustible dust, do I specify Explosion Proof valves just to be safe? Thanks in advance for any help or advice!
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