With nylon-coated finish and EPDM-encapsulated disc for good closure during shut downs, Model GD6765-8N is gear-operated for slow-close functionality to protect piping from water shock. Grooved butterfly valve is UL-/ULC-listed to 350 psi water working pressure and UL-listed for indoor/outdoor use. Additionally, Model F697-0 Class 250 iron body gate valve is rated to 300 psi and carries FM/NYC MEA approvals. Grooved double door silent check valve, Model KG900-W 350, is also available.