The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-063-1845, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Norgren C a Co. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-063-1845 |
| Primary Part Number | R81-200-LNKA |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Norgren C a Co |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| Second End Relationship with First End | IDENTICAL |
| Body Style | CROSS |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| Third End Relationship with Preceding Ends | IDENTICAL WITH FIRST END |
| First End Style Designator | PLAIN |
| Temp Rating | 175.0 FAHRENHEIT NOMINAL DEGF |
| End Connection Quantity | 4 |
| Valve Loading Method | SPRING |
| Fourth End Relationship with Preceding Ends | IDENTICAL WITH FIRST END |
| Material | COPPER ALLOY BODY |
| Media for Which Designed | GAS |
| Thread Size and Series/type Designator | 0.250-18 NPT FIRST END |
| Filter | NOT INCLUDED |
| 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 |
|---|---|
| R81-200-LNKA PRIMARY | Norgren C a Co (USA) |
| Reference | Meaning |
|---|---|
| 131-015 | 5/2 Secondary reference U.S. Government activity |
| 11-010-084 | 5/9 Secondary reference Norgren C a Co |
NSN 4820-00-063-1845 is a Valve,regulating,fluid Pressure, manufactured by Norgren C a Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-063-1845 has 1 manufacturer part number on file: R81-200-LNKA (Norgren C a Co).
5 possible matches (shared part number, not a government interchangeability claim): 4820-00-484-1408, 2915-00-654-4103, 5310-00-900-5724. Verify interchangeability with system specifications before substitution.
Key specifications for R81-200-LNKA: Flow Control Device: DIAPHRAGM; Second End Relationship with First End: IDENTICAL; Body Style: CROSS; Regulation Type: AUTOMATIC SINGLE STAGE. 14 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.