Please fill out the form below for Valve Air Mod N O Double Lvr and get a quote for part number 540-0565-1 by Honeywell Ltd, 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 540-0565-1. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.