49 C.F.R. § 230.52 – Water glass valves. | Midpage
§ 230.52
49 C.F.R. § 230.52
Water glass valves.
Effective Jan 1, 2017
All water glasses shall be equipped with no more than two valves capable of isolating the water glass from the boiler. They shall also be equipped with a drain valve capable of evacuating the glass when it is so isolated.