The Valve,safety Relief, cataloged under National Stock Number 4820-01-214-7972, 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 25 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-214-7972 |
| Primary Part Number | R10AF5J512-TL1 D50341VM |
| 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 | 4.750 INCHES FIRST END IN |
| Bolt Circle Nominal Diameter | 3.125 INCHES SECOND END IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.562 INCHES SECOND END IN |
| Bolt Hole Nominal Diameter | 0.750 INCHES FIRST END IN |
| Valve Size | 1.000 INCHES IN |
| Adjustable Pressure Range | +12.0 TO 59.0 POUNDS PER SQUARE INCH LBS |
| Second Connection Face to Centerline Distance | 3.625 INCHES IN |
| Nominal Outside Diameter | 4.250 INCHES SECOND END IN |
| Nominal Outside Diameter | 6.000 INCHES FIRST END IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| First Connection Face to Centerline Distance | 3.469 INCHES IN |
| Material | STEEL COMP 316 BODY |
| Material | STEEL COMP 304L FLOW CONTROL DEVICE |
| Material | STEEL COMP 304L SEAT |
| Raised Face Nominal Diameter | 3.062 INCHES FIRST END IN |
| Raised Face Nominal Diameter | 1.938 INCHES SECOND END IN |
| Valve Operation Method | AUTOMATIC OR MANUAL |
| Raised Face Nominal Height | 0.062 INCHES ALL ENDS IN |
| Nominal Thickness | 0.562 INCHES SECOND END IN |
| Nominal Thickness | 0.750 INCHES FIRST END 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 |
|---|---|
| R10AF5J512-TL1 D50341VM | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| R10AF5J512-TL1 D50341 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| R10AF5J512-TL1 D50341 | 3/9 Design control — primary reference Hunt Valve Company Inc Dba Union Flonetics |
NSN 4820-01-214-7972 is a Valve,safety Relief, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-214-7972 has 1 manufacturer part number on file: R10AF5J512-TL1 D50341VM (Naval Inventory Control Point Mechanicsburg).
Key specifications for R10AF5J512-TL1 D50341VM: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: RAISED STRAIGHT ALL ENDS; Bolt Circle Nominal Diameter: 4.750 INCHES FIRST END IN. 25 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.