King Brothers Inc. GVG-1500-T 1/2-Inch Threaded PVC Schedule 80 Gate Valve, 1-1/2-Inch, Gray Made in the USA with quality PolyOne Schedule 80 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 Details and certifications available at the website