The Valve,safety Relief, cataloged under National Stock Number 4820-01-417-9377, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watts Regulator Company. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-417-9377 |
| Primary Part Number | 0066087 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Operating Pressure | 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 210.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| 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 |
|---|---|
| 94-7323 PC-13 REV A | The Electric Heater Co Dba Hubbell Electric Heater Co. (USA) |
| 94-7323-13 REV A | The Electric Heater Co Dba Hubbell Electric Heater Co. (USA) |
| 100XL-100210 | Watts Regulator Company (USA) |
| 0066087 PRIMARY | Watts Regulator Company (USA) |
| Reference | Meaning |
|---|---|
| 100XL-3/4IN 100PSI 210 DEG F | 5/9 Secondary reference Watts Regulator Company |
| 100XL-.75 | C/1 Advisory reference — outside the item-of-supply concept Watts Regulator Company |
| 94-7323 | D/9 Drawing number reference only The Electric Heater Co Dba Hubbell Electric Heater Co. |
NSN 4820-01-417-9377 is a Valve,safety Relief, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-417-9377 has 4 manufacturer part numbers on file: 94-7323 PC-13 REV A (The Electric Heater Co Dba Hubbell Electric Heater Co.), 94-7323-13 REV A (The Electric Heater Co Dba Hubbell Electric Heater Co.), 100XL-100210 (Watts Regulator Company), 0066087 (Watts Regulator Company).
3 possible matches (shared part number, not a government interchangeability claim): 4520-01-423-8694, 4730-01-423-8708, 4520-01-423-9516. Verify interchangeability with system specifications before substitution.
Key specifications for 0066087: Operating Pressure: 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 210.0 FAHRENHEIT SINGLE RESPONSE DEGF; Special Features: VALVE SIZE 0.750 IN. IN; Media for Which Designed: WATER, FRESH SINGLE RESPONSE. 3 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.