The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-00-504-2650, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-504-2650 |
| Primary Part Number | A51H9214-3 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Temp Control Device Type | THERMOSTATIC |
| Flow Control Device | POPPET |
| Material | STEEL COMP 410 FLOW CONTROL DEVICE |
| Valve Discharge Flow Rate | 56.0 GALLONS PER MINUTE |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Temp Adjustability | NOT ADJUSTABLE |
| Bulb Length | 7.870 INCHES NOMINAL IN |
| Media for Which Designed | HYDRAULIC FLUID, PHOSPHATE-ESTER BASE |
| Opening Pressure Setting | ERR-060 |
| Material | ALUMINUM ALLOY 2024 BODY |
| Material | ALUMINUM ALLOY 2024 SEAT |
| Surface Treatment | ANODIZE OUTSIDE |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY THE SOURCE CONTROL DWG NO. |
| Material Document and Classification | QQ-S-763, CLASS 410 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Material Document and Classification | QQ-A-225/6, ALLOY 2024, T6 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-A-225/6, ALLOY 2024, T6 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A51H9214-3 | Northrop Grumman Systems Corporation (USA) |
| 48430 | Eaton Aerospace Llc Dba Eaton Aerospace Jackson (USA) |
| A51H9214-3 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA) |
NSN 4820-00-504-2650 is a Valve,relief,pressure and Temper, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-504-2650 has 3 cross-referenced part numbers: A51H9214-3 (Northrop Grumman Systems Corporation), 48430 (Eaton Aerospace Llc Dba Eaton Aerospace Jackson), A51H9214-3 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems).
There is 1 known substitute for 4820-00-504-2650: 5120-00-293-2321. Verify interchangeability with system specifications before substitution.
Key specifications for A51H9214-3: Temp Control Device Type: THERMOSTATIC; Flow Control Device: POPPET; Material: STEEL COMP 410 FLOW CONTROL DEVICE; Valve Discharge Flow Rate: 56.0 GALLONS PER MINUTE. 17 total characteristics are documented in the Federal Logistics Information System.