The Valve,safety Relief, cataloged under National Stock Number 4820-01-469-1616, 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 11 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-469-1616 |
| Primary Part Number | NMP-701 OPT B LL-2110-C 33T50 |
| 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 |
| Nominal Pipe Size Accommodated | 0.250 INCHES ALL ENDS IN |
| Connection Style | BEVELED (PIPE) ALL ENDS |
| Connection Type | BUTT WELD PIPE ALL ENDS |
| Style Designator | ANGLE |
| Adjustable Pressure Range | +33.0 TO 50.0 POUNDS PER SQUARE INCH LBS |
| Features Provided | BONNET PACKING |
| Disk Loading Method | SPRING |
| Material | NICKEL ALLOY STEM |
| Material | BRONZE BODY |
| Material | NICKEL ALLOY 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 |
|---|---|
| LL-2110-C 33T50PSI 1/4 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| NMP-701 OPT B LL-2110-C 33T50 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| LL-2110-C 33T50PSI 1/4IN | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| CDS-532 ITEM 16 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| LL-2110-C 33T50PSI 1/4 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| LL-2110-C 33T50 | C/1 Advisory reference — outside the item-of-supply concept Kunkle Industries Inc Lonergan Valve Div |
| CDS-532 ITEM 16 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| NMP-701 OPT B LL-2110-C 33T50 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| LL-2110-C 33T50PSI 1/4IN | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| NMP-701 | D/9 Drawing number reference only Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-469-1616 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 4820-01-469-1616 has 4 manufacturer part numbers on file: LL-2110-C 33T50PSI 1/4 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), NMP-701 OPT B LL-2110-C 33T50 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), LL-2110-C 33T50PSI 1/4IN (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), CDS-532 ITEM 16 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
8 possible matches (shared part number, not a government interchangeability claim): 4820-01-469-8960, 4820-01-469-8975, 4820-01-469-9291. Verify interchangeability with system specifications before substitution.
Key specifications for NMP-701 OPT B LL-2110-C 33T50: Nominal Pipe Size Accommodated: 0.250 INCHES ALL ENDS IN; Connection Style: BEVELED (PIPE) ALL ENDS; Connection Type: BUTT WELD PIPE ALL ENDS; Style Designator: ANGLE. 11 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.