Please fill out the form below for Valve Y and get a quote for part number 3D4A by Sioux Corporation with NSN 4820010753351 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 3D4A. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.