4820-01-306-6213 (VC2500400FD1)
NSN 4820-01-306-6213 (NIIN 01-306-6213) is a check valve in Federal Supply Class 4820, Valves, Nonpowered — a valve permitting flow in one direction only. Manufacturer part number VC2500400FD1 (Haywardindl. Products, Inc., CAGE 73124); also referenced as VC 250 4IN (Haywardindl. Products, Inc.).
Key specs: 150 psi maximum single response operating pressure; full characteristics table below. NIIN assigned August 1989; DEMIL A (none required); unit of issue EA (each), $573.09 gov standard price.