4510-00-498-3719 (WWP541)
NSN 4510-00-498-3719 (NIIN 00-498-3719) is a valve float in Federal Supply Class 4510, Plumbing Fixtures And Accessories — a flotation device used to actuate an inlet or outlet valve. Manufacturer part number WWP541 (Federal Specifications Promulgated, CAGE 81348).
Key specs: 0 to 50 psi operating pressure range; full characteristics table below. NIIN assigned October 1969; DEMIL A (none required).