Please fill out the form below for Valve Relief Pressu and get a quote for part number BM-S-527 ITEM 137 by Metso Minerals Industries Inc with NSN 4820012379449 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 BM-S-527 ITEM 137. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.