Part Number 8668 ITEM 4 8IN having (CAGE Code 79342) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for 8668 ITEM 4 8IN Valve Check by Williams William E Valve Corp Db. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.