The Seat,valve, cataloged under National Stock Number 4820-01-428-9788, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Atlas Valve Co. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-428-9788 |
| Primary Part Number | NAP 953 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Atlas Valve Co |
| Status | ACTIVE |
| Seating Surface Shape | ANGULAR |
| Material | NICKEL ALLOY OVERALL |
| Material Document and Classification | QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Style Designator | FAUCET |
| Seal Accommodation Type | GROOVED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| NAP 953 | Atlas Valve Co (USA) |
| NAP953 FIND 13 | Atlas Valve Co (USA) |
| P10770A | Atlas Valve Co (USA) |
NSN 4820-01-428-9788 is a Seat,valve, manufactured by Atlas Valve Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-428-9788 has 3 cross-referenced part numbers: NAP 953 (Atlas Valve Co), NAP953 FIND 13 (Atlas Valve Co), P10770A (Atlas Valve Co).
There are 3 known substitutes for 4820-01-428-9788: 4820-01-376-2712, 4820-01-428-9787, 4820-01-428-9790. Verify interchangeability with system specifications before substitution.
Key specifications for NAP 953: Seating Surface Shape: ANGULAR; Material: NICKEL ALLOY OVERALL; Material Document and Classification: QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Style Designator: FAUCET. 6 total characteristics are documented in the Federal Logistics Information System.