In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
I've worked in the HVAC field for 25 years and have not come across the attached valve. It is installed in a steam line at a hospital in Vermont. The inlet side is attached to the building steam main at about 15 psi.The discharge side is piped up through the roof and emits a constant flow of steam to the outside. The Owner has done some research and has the understanding the valve serves as a pressure relief valve, in some capacity. The handwheel has cast lettering to turn clockwise to increase pressure.
I would appreciate any explanation on the purpose of this valve. Obviously it's very old and probably obsolete. The Owner is wondering if it can be removed and capped.