The Valve,safety Relief, cataloged under National Stock Number 4820-01-431-6612, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-431-6612 |
| Primary Part Number | 72493-001 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Material Document and Classification | ASME SB148 UNS C95200 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Valve Size | 1.500 INCHES IN |
| Bonnet Type | INSIDE SPRING |
| Second Connection Face to Centerline Distance | 4.875 INCHES IN |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | BOLTED |
| First Connection Face to Centerline Distance | 4.750 INCHES IN |
| Material | BRONZE OVERALL |
| Valve Operation Method | AUTOMATIC |
| Raised Face Nominal Height | 0.062 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 |
|---|---|
| DS-G-72493-1 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 72493-001 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| 72493001-DS-G-7 | C/1 Advisory reference — outside the item-of-supply concept Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
NSN 4820-01-431-6612 is a Valve,safety Relief, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-431-6612 has 2 manufacturer part numbers on file: DS-G-72493-1 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 72493-001 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-431-9100. Verify interchangeability with system specifications before substitution.
Key specifications for 72493-001: Flow Control Device: DISK; Flange Face Design: RAISED STRAIGHT ALL ENDS; Connection Type: FLANGE ALL ENDS; Style Designator: ANGLE FLANGED ENDS. 14 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.