1-1/4" C x C brass swing check valve. Meets ANSI (American National Standards Institute)/NSF (National Sanitation Foundation) 61-9 approved low lead standards. Threaded ends comply with ANSI B1.20.1. Solder ends comply with ANSI B16.18. Working pressure nonshock 200 psi (pounds per square inch). Manufactured to include no more than 0.25% weighted average lead content on wetted surfaces.