The Valve,safety Relief, cataloged under National Stock Number 4820-01-090-9655, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Industrial Technologies & Services Etten-Leur. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Industrial Technologies & Services Etten-Leur (CAGE H0570); Thales Nederland (CAGE H0203); Pall Gmbh (CAGE C0202); Northrop Grumman Corp Electronic Systems Defensive System Div (CAGE 22915); Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-090-9655 |
| Primary Part Number | RS6847 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Industrial Technologies & Services Etten-Leur |
| Status | ACTIVE |
| 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 |
|---|---|
| RS6847 | Industrial Technologies & Services Etten-Leur (NLD) |
| 3522 589 00956 | Thales Nederland (NLD) |
| W17854 | Pall Gmbh (DEU) |
| CV0179-008 | Northrop Grumman Corp Electronic Systems Defensive System Div (USA) |
| 5020611 FIND 9 | Naval Sea Systems Command (USA) |
| WD1113 | Msi-Defence Systems Ltd (GBR) |
| SS-4CPA2-50 | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| 8721018-02 | 5/9 Secondary reference U.S. Government activity |
| 13219E4289-1 | 5/9 Secondary reference U.S. Government activity |
| CV0179-005 | 5/9 Secondary reference Northrop Grumman Corp Electronic Systems Defensive System Div |
| SS-4CPA2-50 | 3/9 Design control — primary reference Nupro Co |
| 13219E4289 | 5/9 Secondary reference U.S. Government activity |
| SS-4CPA2-50-DC | 5/9 Secondary reference Nupro Co |
| S-4CPA2-50 | 5/9 Secondary reference Swagelok Co |
NSN 4820-01-090-9655 is a Valve,safety Relief, manufactured by Industrial Technologies & Services Etten-Leur, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-090-9655 has 7 manufacturer part numbers on file: RS6847 (Industrial Technologies & Services Etten-Leur), 3522 589 00956 (Thales Nederland), W17854 (Pall Gmbh), CV0179-008 (Northrop Grumman Corp Electronic Systems Defensive System Div), 5020611 FIND 9 (Naval Sea Systems Command) and 2 more.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-370-7816. Verify interchangeability with system specifications before substitution.
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.