King Brothers Inc. KSCC-0750-T 3/4-Inch Threaded PVC Clear Swing Check Valve, Clear Made in the USA with High Quality ProGuard PVC II material NSF certified to be drinking water safe and low lead approved UPC/IAPMO listed.Pressure rated to 150 psi at 73F Degree KBI uses the 1-Inch KSC/KSCC bodies for the  -Inch,  -Inch and 1 -Inch check valves Details and certifications available www.kbico.com