What is this piece of brass that I have? I believe it is some type of whistle?

Question

Im not sure if this piece of brass I found at an auction is a whistle or a valve. After connecting it to an air compressor it made a slight noise, but not enough to be sure that it was a whistle. It was made by The American Steam Gauge and Valve Co. in Boston MA USA. The only other writing on it is what i assume is a serial number,it reads B08496. Any help is appreciated. You can contact me at [e-mail]

Answer 1

Need to see a picture...

Answer 2

You have blown down it and it didn't make a noise so I'll hazard a guess it's not a whistle unless the pea is missing. the lettering American steam guage and valve co should suggest to you it is a steam valve but not one of the whistling breed...................