Part Number 31P-VAI having (CAGE Code 24522) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for 31P-VAI Valve Linear Directional Control by Humphrey Inc. 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.