The Valve,safety Relief, cataloged under National Stock Number 4820-00-113-9110, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Essex Industries, Inc. Dba Essex Industries. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-113-9110 |
| Primary Part Number | 20C-0009-1 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Essex Industries, Inc. Dba Essex Industries |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Connection Style | FLARED (TUBE) FIRST END |
| Style Designator | STRAIGHT THRU |
| Nominal Outside Diameter Tube Accommodated | 0.313 INCHES FIRST END IN |
| Thread Direction | RIGHT-HAND FIRST END |
| Seat Angle | 37.0 DEGREES FIRST END |
| Disk Loading Method | SPRING |
| Thread Class | 3A FIRST END A |
| 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 |
|---|---|
| 20C-0009-1 PRIMARY | Essex Industries, Inc. Dba Essex Industries (USA) |
| Reference | Meaning |
|---|---|
| 8148650 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-00-113-9110 is a Valve,safety Relief, manufactured by Essex Industries, Inc. Dba Essex Industries, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-113-9110 has 1 manufacturer part number on file: 20C-0009-1 (Essex Industries, Inc. Dba Essex Industries).
Key specifications for 20C-0009-1: Flow Control Device: POPPET; Connection Style: FLARED (TUBE) FIRST END; Style Designator: STRAIGHT THRU; Nominal Outside Diameter Tube Accommodated: 0.313 INCHES FIRST END IN. 8 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.