Elbow, 90 Degree, Pipe Size 2 1/2 x 1 1/2 In, Threaded Connection, Material of Construction Black Cast Iron, Class 125, WOG 175 At -20 to 150 Deg F PSI, Standards UL: FM Approved: ASME B16.4, Compliance Certified For Use in Potable Water Applications in CA and VT Black Cast-Iron Threaded Pipe Fittings Class 125Designed for use in fire protection applications. Sizes 1/4" to 4" NPS are included in the List of Inspected Fire Protection Equipment and Materials issued by the Underwriters Laboratories, Inc. NPT threads.UL Listed; FM Approved; meet ASME B16.4.Max. pressure: 175 psi WOG; 125 psi saturated steam Temp. range: -20 to 150 F