Part Number 990 003 006 having (CAGE Code U4474) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for 990 003 006 Parts Kit Safety Relief Valve by Sun Hydraulics Corp. 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.