The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-376-5618, 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 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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 | 4820-00-376-5618 |
| Primary Part Number | A51H9217-1 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| Second End Style Designator | EXTERNAL SEAT FOR GASKET SEAL |
| Body Style | STRAIGHT THRU |
| First End Connection Type | THREADED INTERNAL BOSS |
| Second End Connection Type | THREADED EXTERNAL BOSS |
| First End Style Designator | GASKET SEAL |
| First End Thread Class | 3B |
| Media for Which Designed | HYDRAULIC OIL |
| Second End Thread Direction | RIGHT-HAND |
| Flow Control Device | PISTON, SPRING LOADED |
| Maximum Inlet Pressure Rating | ERR-060 |
| Material | ALUMINUM ALLOY 7075 SEAT |
| Second End Thread Class | 3A A |
| Filter | NOT INCLUDED |
| Valve Loading Method | SPRING |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| Renewable Seat Ring Type | PRESSED-IN |
| Temp Rating | -65.0 FAHRENHEIT MINIMUM AND 275.0 FAHRENHEIT MAXIMUM DEGF |
| End Connection Quantity | 2 |
| Material | RUBBER SYNTHETIC PACKING |
| Material | ALUMINUM ALLOY 7075 FLOW CONTROL DEVICE |
| Surface Treatment Document and Classification | MIL-A-8625 FED SPEC 3RD TREATMENT RESPONSE OUTSIDE |
| Material Document and Classification | QQ-A-225/9,ALLOY 7075,T73 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-A-225/9, ALLOY 7075, T73 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Thread Size and Series/type Designator | 23/32-20 UNS SECOND END |
| Surface Treatment | ANODIZE AND PAINT OUTSIDE |
| Thread Size and Series/type Designator | 3/4-16 UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| Material Document and Classification | QQ-A-225/9, T73 FED SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A51H9217-1 | Northrop Grumman Systems Corporation (USA) |
| A51H9217-1 | Northrop Grumman Systems Corporation (USA) |
| 49140 | Eaton Aerospace Llc Dba Eaton Aerospace Jackson (USA) |
| A51H9217-1 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA) |
NSN 4820-00-376-5618 is a Valve,regulating,fluid Pressure, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-376-5618 has 4 cross-referenced part numbers: A51H9217-1 (Northrop Grumman Systems Corporation), A51H9217-1 (Northrop Grumman Systems Corporation), 49140 (Eaton Aerospace Llc Dba Eaton Aerospace Jackson), A51H9217-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems).
There is 1 known substitute for 4820-00-376-5618: 3030-00-879-8741. Verify interchangeability with system specifications before substitution.
Key specifications for A51H9217-1: First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: NOT IDENTICAL; Second End Style Designator: EXTERNAL SEAT FOR GASKET SEAL; Body Style: STRAIGHT THRU. 29 total characteristics are documented in the Federal Logistics Information System.