The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-045-7728, 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 21 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-045-7728 |
| Primary Part Number | HSRV-9-110 |
| 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 |
| Flow Control Device | DISK, TOP GUIDED |
| First End Thread Direction | RIGHT-HAND |
| 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 End Style Designator | PLAIN |
| Second End Nominal Pipe Size Accommodated | 0.500 INCHES IN |
| End Connection Quantity | 2 |
| Second End Thread Direction | RIGHT-HAND |
| Second End Style Designator | PLAIN |
| Opening Pressure Setting | ERR-060 |
| Temp Control Device Type | THERMOSTATIC |
| First End Connection Type | THREADED INTERNAL PIPE |
| Temp Adjustability | NOT ADJUSTABLE |
| First End Nominal Pipe Size Accommodated | 0.500 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | RUBBER FLOW CONTROL DEVICE |
| Material | COPPER ALLOY STEM |
| Material | COPPER ALLOY SEAT |
| Media for Which Designed | WATER, FRESH |
| Second End Connection Type | THREADED EXTERNAL PIPE |
| 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-9-110 PRIMARY | The Electric Heater Co Dba Hubbell Electric Heater Co. (USA) |
| Reference | Meaning |
|---|---|
| HSRV-1-10 | 5/9 Secondary reference The Electric Heater Co Dba Hubbell Electric Heater Co. |
| 31SL3-4-110PSI | C/1 Advisory reference — outside the item-of-supply concept Watts Regulator Company |
| 17723-7 AND N131 SET 110PSI | 5/9 Secondary reference The Electric Heater Co Dba Hubbell Electric Heater Co. |
NSN 4820-01-045-7728 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 4820-01-045-7728 has 1 manufacturer part number on file: HSRV-9-110 (The Electric Heater Co Dba Hubbell Electric Heater Co.).
Key specifications for HSRV-9-110: Flow Control Device: DISK, TOP GUIDED; First End Thread Direction: RIGHT-HAND; Temp Rating: 210.0 FAHRENHEIT DEGF; Second End Relationship with First End: NOT IDENTICAL. 21 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.