Part Number 506 1 N1 1552 1IN having (CAGE Code 4B241) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for 506 1 N1 1552 1IN Valve Diaphragm Stop by Tri State Technical Sales. 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.