The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-537-4490, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Electric Heater Co Dba Hubbell Electric Heater Co.. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-537-4490 |
| Primary Part Number | HSRV-10 85# |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Electric Heater Co Dba Hubbell Electric Heater Co. |
| Status | ACTIVE |
| Temp Rating | 210.0 FAHRENHEIT DEGF |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS |
| First Connection Face to Centerline Distance | 4.500 INCHES NOMINAL IN |
| Second End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| End Connection Quantity | 2 |
| Opening Pressure Setting | ERR-060 |
| First End Connection Type | THREADED INTERNAL PIPE |
| Temp Adjustability | ADJUSTABLE |
| Media for Which Designed | WATER, FRESH |
| Second End Connection Type | THREADED EXTERNAL PIPE |
| Furnished Items | MANUAL OPERATING DEVICE |
| 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 |
|---|---|
| HSRV-10 85# PRIMARY | The Electric Heater Co Dba Hubbell Electric Heater Co. (USA) |
| 04-1005-04 ITEM 10 | The Electric Heater Co Dba Hubbell Electric Heater Co. (USA) |
NSN 4820-01-537-4490 is a Valve,relief,pressure and Temper, manufactured by The Electric Heater Co Dba Hubbell Electric Heater Co., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-537-4490 has 2 manufacturer part numbers on file: HSRV-10 85# (The Electric Heater Co Dba Hubbell Electric Heater Co.), 04-1005-04 ITEM 10 (The Electric Heater Co Dba Hubbell Electric Heater Co.).
Key specifications for HSRV-10 85#: Temp Rating: 210.0 FAHRENHEIT DEGF; Second End Relationship with First End: NOT IDENTICAL; Body Style: ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS; First Connection Face to Centerline Distance: 4.500 INCHES NOMINAL IN. 12 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.