The Valve,safety Relief, cataloged under National Stock Number 4820-01-671-8263, 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 16 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 | 4820-01-671-8263 |
| Primary Part Number | V74G-4GK-NFN |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Norgren C a Co |
| Status | ACTIVE |
| Nominal Length | 2.91 INCHES ALL ENDS IN |
| Minimum Operating Temp | -30.0 FAHRENHEIT DEGF |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | APP-16 MFR REF ALL MATERIAL RESPONSES OVERALL |
| Operating Pressure | 0.3 BAR MINIMUM AND 4.0 BAR MAXIMUM POWER DRIVE |
| Operating Pressure | 4.0 BAR MAXIMUM SINGLE RESPONSE |
| Valve Size | 0.5 INCHES IN |
| Bonnet Type | INSIDE SPRING |
| Disk Loading Method | SPRING |
| Mounting Facility | BRACKET(S) |
| Bonnet Attachment Method | INTEGRAL |
| Nominal Width | 3.15 INCHES ALL ENDS IN |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | ALUMINUM BODY |
| Opening Pressure Setting | 0.3 BAR |
| 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 |
|---|---|
| V74G-4GK-NFN PRIMARY | Norgren C a Co (USA) |
NSN 4820-01-671-8263 is a Valve,safety Relief, manufactured by Norgren C a Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-671-8263 has 1 manufacturer part number on file: V74G-4GK-NFN (Norgren C a Co).
Key specifications for V74G-4GK-NFN: Nominal Length: 2.91 INCHES ALL ENDS IN; Minimum Operating Temp: -30.0 FAHRENHEIT DEGF; Style Designator: STRAIGHT THRU; Material Document and Classification: APP-16 MFR REF ALL MATERIAL RESPONSES OVERALL. 16 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.