The National Propane Gas Association recently sent an ... with ammonia is that it may turn blue-green. Note that some valves have a green thread sealing compound or a green-coated valve stem ...

What actually is propane, though, and does it have an expiration ... missing pieces, and leaking valves — the most common ...

State Fire Marshal Stephen Coan says it's important to check propane ... valves. The discoloration was feared to ammonia contamination and an explosion risk. He said Friday only one 20-pound gas ...

Step 1: Turn off the propane and disconnect the regulator ... Many burners connect to the gas control valves with flexible venturi tubes, while rod-type burners typically slip directly onto ...