Spears 2621-007G PVC Schedule 80 Utility Ball Valves Utility ball valves PVC with EPDM o-ring seal; threaded ends; PVC gray Size: 3/4-inch Schedule 80 PVCs are thicker, stronger, will handle higher pressures, and endure colder climates than Schedule 40 PVCs Schedule 80 PVCs: not for Compressed Air or Gas; conforms to ASTM D 1785; fittings conform to ASTM D 2467; threaded fittings conform to ASTM D 2464