The Valve,safety Relief, cataloged under National Stock Number 4820-01-248-6253, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Technetics Group Llc Dba Technetics Group Deland Div Technetics Group Deland. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-248-6253 |
| Primary Part Number | 7-050566-103 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Technetics Group Llc Dba Technetics Group Deland Div Technetics Group Deland |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Nominal Pipe Size Accommodated | 0.500 INCHES ALL ENDS IN |
| Connection Style | STREAMLINED WITH ONE BRAZING RING ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | ANGLE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Bonnet Type | INSIDE SPRING |
| Bonnet Attachment Method | THREADED |
| Material | STEEL CORROSION RESISTING BODY |
| Material | PLASTIC POLYAMIDE NYLON FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING STEM |
| Material | RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM PACKING |
| Opening Pressure Setting | 3200.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 7-050566-103 PRIMARY | Technetics Group Llc Dba Technetics Group Deland Div Technetics Group Deland (USA) |
| Reference | Meaning |
|---|---|
| 7-050566-103 | 3/9 Design control — primary reference Technetics Group Llc Dba Technetics Group Burbank |
| 7-050566-103 | 5/9 Secondary reference Senior Operations Llc Div Senior Aerospace Ketema |
| 7-050566 | D/9 Drawing number reference only Senior Operations Llc Div Senior Aerospace Ketema |
NSN 4820-01-248-6253 is a Valve,safety Relief, manufactured by Technetics Group Llc Dba Technetics Group Deland Div Technetics Group Deland, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-248-6253 has 1 manufacturer part number on file: 7-050566-103 (Technetics Group Llc Dba Technetics Group Deland Div Technetics Group Deland).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-248-6254. Verify interchangeability with system specifications before substitution.
Key specifications for 7-050566-103: Flow Control Device: DISK; Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN; Connection Style: STREAMLINED WITH ONE BRAZING RING ALL ENDS; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 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.