The Seat,valve, cataloged under National Stock Number 4820-01-173-1231, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Ernst Flow Industries Llc Div Ernst Flow Industries. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-173-1231 |
| Primary Part Number | EEP-54-ASX DETAIL 12 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Ernst Flow Industries Llc Div Ernst Flow Industries |
| Status | ACTIVE |
| Flange Diameter | 0.634 INCHES NOMINAL IN |
| Material | NICKEL ALLOY OVERALL |
| Style Designator | THREADED FLANGED |
| Thread Series Designator | UNF SINGLE THREADED PORTION |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Seat Angle in Deg | 50.000 NOMINAL |
| Thread Length | 0.400 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Body Inside Diameter | 0.283 INCHES NOMINAL IN |
| Under Flange Height | 0.503 INCHES NOMINAL IN |
| Flange Seat to Disk End Height | 0.194 INCHES NOMINAL IN |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Nominal Thread Size | 0.500 INCHES SINGLE THREADED PORTION IN |
| Seating Surface Shape | ANGULAR |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| EEP-54-ASX DETAIL 12 PRIMARY | Ernst Flow Industries Llc Div Ernst Flow Industries (USA) |
| EEP-54-ASX | Ernst Flow Industries Llc Div Ernst Flow Industries (USA) |
| EEP-54-ASX-12 | Gil, Inc. (USA) |
NSN 4820-01-173-1231 is a Seat,valve, manufactured by Ernst Flow Industries Llc Div Ernst Flow Industries, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-173-1231 has 3 cross-referenced part numbers: EEP-54-ASX DETAIL 12 (Ernst Flow Industries Llc Div Ernst Flow Industries), EEP-54-ASX (Ernst Flow Industries Llc Div Ernst Flow Industries), EEP-54-ASX-12 (Gil, Inc.).
There are 4 known substitutes for 4820-01-173-1231: 4710-01-167-4398, 4710-01-170-2447, 6680-01-422-2654 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for EEP-54-ASX DETAIL 12: Flange Diameter: 0.634 INCHES NOMINAL IN; Material: NICKEL ALLOY OVERALL; Style Designator: THREADED FLANGED; Thread Series Designator: UNF SINGLE THREADED PORTION. 13 total characteristics are documented in the Federal Logistics Information System.