Part Number 501-1794 PC. NO.4 having (CAGE Code 53154) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for 501-1794 PC. NO.4 Stem Fluid Valve by Portland Valve Llc. 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.