Part Number 985 REF NO. 20 having (CAGE Code 94607) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for 985 REF NO. 20 Piston Valve by Amot Controls Corporation. 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.