U.S. Plastic has a variety of threaded float valves in sizes from 1/2" to 1", and have glass-filled nylon valve bodies. Internal components are comprised of ABS plastic, silicone and stainless steel and meet all anti-siphon requirements. Operating pressure ranges from 1/2"-8-65; 1"-8-100 lbs. Not FDA/NSF compliant, for use with water systems under 90 degrees only (with high temperature valves up to 150 degrees).