Part Number EX8-M21 having (CAGE Code 5M9B9) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for EX8-M21 Valve Expansion by Emerson Climate Technologies 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.