Please fill out the form below for Disk Valve and get a quote for part number M11781 ITEM 4 by Shipham Valves A Division Of with NSN 4820004022424 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 M11781 ITEM 4. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.