Venting air trapped in a boiler

[pesy]

Does anyone know where to get a stainless steel air venting valve?  I'm looking for one rated for 150psi to put on a boiler to release the trapped air.

 

[thechief]

GESTRA makes an air vent rated for the pressure you have. I have a Model MK 35/32 for venting noncondensible gases from steam jacketed vessels. The air vent is rated for 305 psig. Hope this helps.

Mike
Chief Engineer of a big Brewery