The Seat,valve, cataloged under National Stock Number 4820-01-081-5227, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tec Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 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 | 4820-01-081-5227 |
| Primary Part Number | 838-859-041 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Tec Inc |
| Status | ACTIVE |
| Body Inside Diameter | 4.745 INCHES NOMINAL IN |
| Seating Surface Shape | FLAT |
| Style Designator | PLAIN FLANGED |
| Material | COPPER ALLOY BODY |
| Body Outside Diameter | 5.777 INCHES NOMINAL IN |
| Flange Diameter | 9.081 INCHES NOMINAL IN |
| Under Flange Height | 1.068 INCHES NOMINAL IN |
| Flange Seat to Disk End Height | 0.445 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 838-859-041 | Tec Inc (USA) |
| 855-025-041 | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots (USA) |
| 861-708-041 | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots (USA) |
| 838-859-041 | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots (USA) |
| 855-025-041-1 | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots (USA) |
| 2404 | Tec Inc (USA) |
| 838-859-041 | Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand (USA) |
NSN 4820-01-081-5227 is a Seat,valve, manufactured by Tec Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-081-5227 has 7 cross-referenced part numbers: 838-859-041 (Tec Inc), 855-025-041 (Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots), 861-708-041 (Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots), 838-859-041 (Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots), 855-025-041-1 (Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots) and 2 more.
There are 12 known substitutes for 4820-01-081-5227: 3455-00-153-9835, 5975-00-194-8868, 6810-00-227-0404 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 838-859-041: Body Inside Diameter: 4.745 INCHES NOMINAL IN; Special Features: FLANGE CONTAINS 8 BOLT HOLES; Seating Surface Shape: FLAT; Style Designator: PLAIN FLANGED. 9 total characteristics are documented in the Federal Logistics Information System.