The Seat,valve, cataloged under National Stock Number 4820-01-311-8393, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is William E Williams Valve Corp. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-311-8393 |
| Primary Part Number | 8988 ITEM 3 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | William E Williams Valve Corp |
| Status | ACTIVE |
| Seating Surface Shape | FLAT |
| Material | STEEL SEAT |
| Style Designator | PLAIN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 8988 | William E Williams Valve Corp (USA) |
| 8988 ITEM 3 PRIMARY | William E Williams Valve Corp (USA) |
NSN 4820-01-311-8393 is a Seat,valve, manufactured by William E Williams Valve Corp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-311-8393 has 2 cross-referenced part numbers: 8988 (William E Williams Valve Corp), 8988 ITEM 3 (William E Williams Valve Corp).
There are 6 known substitutes for 4820-01-311-8393: 5950-00-485-7661, 5960-00-860-7710, 5120-01-069-5687 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 8988 ITEM 3: Seating Surface Shape: FLAT; Material: STEEL SEAT; Style Designator: PLAIN. 3 total characteristics are documented in the Federal Logistics Information System.