Please fill out the form below for Stem Valve Release and get a quote for part number PDA1050 by Champ Industries with NSN 4820009456499 and FSC Name is 4820 Valves Nonpowered, please include required quantity along with expected turn around time. Our knowledgeable account manager will reply you shortly. Also check for the related parts for part number PDA1050. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.