The Valve,safety Relief, cataloged under National Stock Number 4820-01-024-6334, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-024-6334 |
| Primary Part Number | 16200789 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Flange Shape | RECTANGULAR WITH HOLES FIRST END |
| Flange Face Design | PLAIN FIRST END |
| Nominal Length | 3.825 INCHES FIRST END IN |
| Connection Type | FLANGE FIRST END |
| Style Designator | ANGLE |
| Bolt Hole Nominal Diameter | 0.560 INCHES FIRST END IN |
| Bonnet Type | INSIDE SPRING |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 2.750 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Bolt Hole Quantity | 4 FIRST END |
| Bonnet Attachment Method | THREADED |
| Nominal Width | 3.825 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 2.750 INCHES FIRST END IN |
| Material | STEEL OVERALL |
| Opening Pressure Setting | 80.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.335 INCHES FIRST END IN |
| 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 |
|---|---|
| 16200789 PRIMARY | Fairbanks Morse, Llc (USA) |
| P16200789N PRIMARY | Hatch and Kirk Inc Hk/ppi Div (USA) |
| Reference | Meaning |
|---|---|
| 16200789 | 5/9 Secondary reference U.S. Government activity |
| CA2490AFB-3 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-024-6334 is a Valve,safety Relief, manufactured by Fairbanks Morse, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-024-6334 has 2 manufacturer part numbers on file: 16200789 (Fairbanks Morse, Llc), P16200789N (Hatch and Kirk Inc Hk/ppi Div).
Key specifications for 16200789: Flow Control Device: POPPET; Flange Shape: RECTANGULAR WITH HOLES FIRST END; Flange Face Design: PLAIN FIRST END; Nominal Length: 3.825 INCHES FIRST END IN. 18 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.