The Valve,safety Relief, cataloged under National Stock Number 4820-00-400-9604, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dukes Aerospace, Inc.. Government technical data includes 30 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-400-9604 |
| Primary Part Number | 3336-00 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dukes Aerospace, Inc. |
| Status | ACTIVE |
| Flow Control Device | POPPETPOPPET |
| Connection Style | FLARED (TUBE) FIRST ENDFLARED (TUBE) FIRST END |
| Connection Style | BARBED-BEADED (HOSE) SECOND ENDBARBED-BEADED (HOSE) SECOND END |
| Nominal Inside Diameter Hose Accommodated | 0.250 INCHES SECOND END IN |
| Nominal Outside Diameter Hose Accommodated | 0.375 INCHES SECOND END IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED EXTERNAL HOSE SECOND ENDUNTHREADED EXTERNAL HOSE SECOND END |
| Style Designator | ANGLE |
| Material Document and Classification | FEDSTD66,AISI410/SAE51410 FED STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | FEDSTD66,AISI410/SAE51410 FED STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICEQQ-A-225/6,ALLOY2024,T351 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-A-225/6,ALLOY2024,T351 FED SPEC SINGLE MATERIAL RESPONSE SEATQQ-A-225/6,ALLOY2024,T351 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Operating Pressure | 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +5.0 TO 100.0 POUNDS PER SQUARE INCH+5.0 TO 100.0 POUNDS PER SQUARE INCH LBS |
| Features Provided | BONNET PACKING AND BONNET PACKING AND PRESSURE TIGHT OUTLET SIDEPRESSURE TIGHT OUTLET SIDE |
| Bonnet Type | INSIDE SPRINGINSIDE SPRING |
| Thread Direction | RIGHT-HAND FIRST ENDRIGHT-HAND FIRST END |
| Nominal Thread Size | 0.437 INCHES FIRST END0.437 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Maximum Operating Temp | 275.0 FAHRENHEIT SINGLE RESPONSE275.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRINGSPRING |
| Bonnet Attachment Method | THREADEDTHREADED |
| Media for Which Designed | OIL, HYDRAULIC SINGLE RESPONSE |
| Thread Class | 3A FIRST END3A FIRST END A |
| Material | STEEL COMP 410 FLOW CONTROL DEVICE |
| Material | ALUMINUM ALLOY 2024 SEATALUMINUM ALLOY 2024 BODY |
| Material | STEEL COMP 410 FLOW CONTROL DEVICEALUMINUM ALLOY 2024 SEAT |
| Thread Series Designator | UNF FIRST END |
| Opening Pressure Setting | 5.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATICAUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 3336-00 PRIMARY | Dukes Aerospace, Inc. (USA) |
NSN 4820-00-400-9604 is a Valve,safety Relief, manufactured by Dukes Aerospace, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-400-9604 has 1 manufacturer part number on file: 3336-00 (Dukes Aerospace, Inc.).
Key specifications for 3336-00: Flow Control Device: POPPETPOPPET; Connection Style: FLARED (TUBE) FIRST ENDFLARED (TUBE) FIRST END; Connection Style: BARBED-BEADED (HOSE) SECOND ENDBARBED-BEADED (HOSE) SECOND END; Nominal Inside Diameter Hose Accommodated: 0.250 INCHES SECOND END IN. 30 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.