Latrobe Foundry Machine & Supply Co. 3-1/2" Half Coupling: Standard Schedule 40

Standard coupling, Schedule 40. National pipe threads in accordance with ANSI/ASME B1.20.1. Fittings are right-hand threaded. The fittings have a general conformance with dimensional standard MIL-DTL-52618-E. Fittings are random tested at 120 pounds of air pressure under water, for a normal surface condition rating of 150 pounds of pressure. Individual fittings are not marked with alloy or pressure data. Fittings are not anodized. Note: Extra-heavy couplings cannot be tested or certified for pressure rating