Part Number 491-0046-642 having (CAGE Code 3C2U0) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for 491-0046-642 Valve Check by J Line Pump Co Dba American Marsh Pumps. 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.