The Disk,valve, cataloged under National Stock Number 4820-00-451-6257, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Cornwell Nuclear Valve Co. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-451-6257 |
| Primary Part Number | 40-109 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Cornwell Nuclear Valve Co |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-451-6257 is a Disk,valve, manufactured by Cornwell Nuclear Valve Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-451-6257 has 2 cross-referenced part numbers: 40-109 (Cornwell Nuclear Valve Co), 40-109CP (Naval Inventory Control Point Mechanicsburg).
There are 12 known substitutes for 4820-00-451-6257: 5961-00-070-3364, 5815-00-097-6568, 2530-00-350-5940 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 40-109: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D. 2 total characteristics are documented in the Federal Logistics Information System.