The Inspector'sTEST Model 3011SG with sight glass is a 300 PSI rated ball valve designed to perform the remote inspector's test function on single-story and other applications with the benefit of locating the orifice indoors. The sight glass option saves time witnessing flow from the exterior of the building. Features include that this model is compact, 300 PSI Rated, UL Listed, FM Approved, complies with NFPA 13, and it features a single-handle ball valve.