The Seat,valve, cataloged under National Stock Number 4820-01-083-8217, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-083-8217 |
| Primary Part Number | 2775511-101 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.040 INCHES NOMINAL IN |
| Flange Diameter | 0.420 INCHES NOMINAL IN |
| Body Outside Diameter | 0.211 INCHES MINIMUM AND 0.217 INCHES MAXIMUM IN |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| Body Stepped Inside Diameter | 0.070 INCHES NOMINAL FIRST STEP IN |
| Body Stepped Inside Diameter | 0.139 INCHES MINIMUM AND 0.145 INCHES MAXIMUM SECOND STEP IN |
| Style Designator | PLAIN FLANGED |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Under Flange Height | 0.154 INCHES NOMINAL IN |
| Material | STEEL COMP 440C OVERALL |
| Seating Surface Shape | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2775511-101 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics (USA) |
| Reference | Meaning |
|---|---|
| 2775511-101 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-083-8217 is a Seat,valve, manufactured by Parker-Hannifin Corporation Dba Pneutronics, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-083-8217 has 1 manufacturer part number on file: 2775511-101 (Parker-Hannifin Corporation Dba Pneutronics).
Key specifications for 2775511-101: Flange Seat to Disk End Height: 0.040 INCHES NOMINAL IN; Flange Diameter: 0.420 INCHES NOMINAL IN; Body Outside Diameter: 0.211 INCHES MINIMUM AND 0.217 INCHES MAXIMUM IN; Hardness Rating: 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL. 11 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.