The Valve,safety Relief, cataloged under National Stock Number 4820-01-506-3687, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-506-3687 |
| Primary Part Number | 3L4 JLT-JOS-15D/84349000 |
| 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 |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Media for Which Designed | LIQUID SINGLE RESPONSE |
| Material | COPPER ALLOY BODY |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT |
| 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 |
|---|---|
| 3L4 JLT-JOS-15D/84349000 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 84349000 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| 3L4 JLT-JOS-15D | C/1 Advisory reference — outside the item-of-supply concept Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-506-3687 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 4820-01-506-3687 has 2 manufacturer part numbers on file: 3L4 JLT-JOS-15D/84349000 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 84349000 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for 3L4 JLT-JOS-15D/84349000: Flange Face Design: RAISED STRAIGHT ALL ENDS; Connection Type: FLANGE ALL ENDS; Style Designator: ANGLE FLANGED ENDS; Special Features: 3L4 VALVE SIZE (3" INLET X 2.853 SQUARE INCH IN AREA ORIFICE X 4" OUTLET); 150X150 RAISED-FACE FLANGES; PACKED LIFTING LEVER (TYPE D) CAP; LIQUID TRIM W/ BUNO O-RING SEAT, K-MONEL BOLTING, AND INCONEL SPRING, BODY AND BONNET PER ASME SB148 UNS C95200.. 7 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.