The Valve,safety Relief, cataloged under National Stock Number 4820-01-268-1307, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Breeze-Eastern Llc. Government technical data includes 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-268-1307 |
| Primary Part Number | Y-1213-24-1 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Breeze-Eastern Llc |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Furnished Items and Quantity | 1 FILTER SCREEN |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Connection Style | FLARELESS (TUBE) ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF SEPARABLE SECTIONS. |
| Material Document and Classification | AMS 5630 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | QQ-S-763C FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.562 INCHES ALL ENDS IN |
| Seat Angle | 24.0 DEGREES ALL ENDS |
| Disk Loading Method | SPRING |
| Surface Treatment | PASSIVATE LOCATION NOT OTHERWISE SPECIFIED |
| Thread Class | 3A ALL ENDS A |
| Material | STEEL COMP 303 BODY |
| Material | STEEL COMP 440C FLOW CONTROL DEVICE |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Opening Pressure Setting | 330.0 POUNDS PER SQUARE INCH LBS |
| Valve Discharge Flow Rate | 3.9 GALLONS PER MINUTE |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| Y-1213-24-1 | Breeze-Eastern Llc (USA) |
| Reference | Meaning |
|---|---|
| PRFC2815330D | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-268-1307 is a Valve,safety Relief, manufactured by Breeze-Eastern Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-268-1307 has 1 manufacturer part number on file: Y-1213-24-1 (Breeze-Eastern Llc).
Key specifications for Y-1213-24-1: Flow Control Device: BALL; Furnished Items and Quantity: 1 FILTER SCREEN; Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED; Connection Style: FLARELESS (TUBE) ALL ENDS. 21 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.
NSN 4820-01-268-1307 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.