Part Number S50 1 2IN having (CAGE Code 18925) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for S50 1 2IN Valve Restrictor Check by Parker Hannifin 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.