Part Number PSL UNF 21 160-2A 2 O 40 40 A 0 having (CAGE Code 1QMV2) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for PSL UNF 21 160-2A 2 O 40 40 A 0 Valve Linear Directional Control by R H M Fluid Power 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.