The Valve,safety Relief, cataloged under National Stock Number 4820-01-224-4703, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-224-4703 |
| Primary Part Number | R10AD5D509-TL1,D50368VM |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Bolt Circle Nominal Diameter | 2.375 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.625 INCHES ALL ENDS IN |
| Valve Size | 0.500 INCHES IN |
| Adjustable Pressure Range | +33.0 TO 40.0 POUNDS PER SQUARE INCH LBS |
| Second Connection Face to Centerline Distance | 3.250 INCHES IN |
| Nominal Outside Diameter | 3.500 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| First Connection Face to Centerline Distance | 3.250 INCHES IN |
| Material | STEEL COMP 316 BODY |
| Material | STEEL COMP 304L FLOW CONTROL DEVICE |
| Raised Face Nominal Diameter | 1.188 INCHES ALL ENDS IN |
| Valve Operation Method | AUTOMATIC OR MANUAL |
| Raised Face Nominal Height | 0.062 INCHES ALL ENDS IN |
| Nominal Thickness | 0.438 INCHES ALL ENDS IN |
| 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 |
|---|---|
| R10AD5D509-TL1,D50368VM | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| R10AD5D509-TL1,D50368 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| R10AD5D509-TL1,D50368 | 3/9 Design control — primary reference Hunt Valve Company Inc Dba Union Flonetics |
NSN 4820-01-224-4703 is a Valve,safety Relief, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-224-4703 has 1 manufacturer part number on file: R10AD5D509-TL1,D50368VM (Naval Inventory Control Point Mechanicsburg).
Key specifications for R10AD5D509-TL1,D50368VM: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: RAISED STRAIGHT ALL ENDS; Bolt Circle Nominal Diameter: 2.375 INCHES ALL ENDS IN. 19 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.