The Seat,valve, cataloged under National Stock Number 4820-01-214-3808, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 13 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-214-3808 |
| Primary Part Number | 255-03 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| Under Flange Height | 0.250 INCHES NOMINAL IN |
| Body Inside Diameter | 1.375 INCHES NOMINAL IN |
| Nominal Thread Size | 1.625 INCHES SINGLE THREADED PORTION IN |
| Style Designator | THREADED FLANGED |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UN SINGLE THREADED PORTION |
| Seating Surface Shape | FLAT |
| Flange Diameter | 1.750 INCHES NOMINAL IN |
| Thread Length | 0.172 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Thread Quantity Per Inch | 18 SINGLE THREADED PORTION |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Flange Seat to Disk End Height | 0.188 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 255-03 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| 40064-4 ITEM 20 | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| 40064-4 | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
NSN 4820-01-214-3808 is a Seat,valve, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-214-3808 has 3 cross-referenced part numbers: 255-03 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40064-4 ITEM 20 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40064-4 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
There are 12 known substitutes for 4820-01-214-3808: 5360-00-526-9617, 4820-01-214-3905, 4820-01-214-7059 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 255-03: Under Flange Height: 0.250 INCHES NOMINAL IN; Body Inside Diameter: 1.375 INCHES NOMINAL IN; Nominal Thread Size: 1.625 INCHES SINGLE THREADED PORTION IN; Special Features: LOWER SEAT. 14 total characteristics are documented in the Federal Logistics Information System.