The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-123-6541, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-123-6541 |
| Primary Part Number | C9567-1 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company |
| Status | ACTIVE |
| Temp Control Device Type | THERMOSTATIC |
| Second End Nominal Thread Size | 0.438 INCHES IN |
| First End Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Second End Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| First End Nominal Thread Size | 0.375 INCHES IN |
| End Connection Quantity | 2 |
| First End Style Designator | GASKET SEAL |
| Second End Thread Direction | RIGHT-HAND |
| Second End Style Designator | GASKET SEAL |
| First End Thread Class | 3B |
| Media for Which Designed | AIR |
| First End Connection Type | THREADED INTERNAL BOSS |
| Second End Thread Class | 3B |
| Second End Relationship with First End | NOT IDENTICAL |
| Second End Connection Type | THREADED INTERNAL BOSS |
| Body Style | STRAIGHT THRU |
| Temp Adjustability | NOT ADJUSTABLE |
| First End Thread Direction | RIGHT-HAND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| C9567-1 PRIMARY | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA) |
| C9567 | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA) |
| 2770108-101 | Federal Industries, Inc. Dba United Valve Company (USA) |
| C9567-1 | Lockheed Martin Services, Llc (USA) |
| 2770108-101 | Parker Hannifin Corporation Div Aerospace Group Headquarters (USA) |
| VA008 | Hydraflow (USA) |
NSN 4820-01-123-6541 is a Valve,relief,pressure and Temper, manufactured by Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-123-6541 has 6 cross-referenced part numbers: C9567-1 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), C9567 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), 2770108-101 (Federal Industries, Inc. Dba United Valve Company), C9567-1 (Lockheed Martin Services, Llc), 2770108-101 (Parker Hannifin Corporation Div Aerospace Group Headquarters) and 1 more.
There are 2 known substitutes for 4820-01-123-6541: 1680-00-613-8181, 5905-00-810-0627. Verify interchangeability with system specifications before substitution.
Key specifications for C9567-1: Special Features: TEMPERATURE RATING WAS PREVIOUSLY NOTATED WITH SAC CODING AS 1A 65.0 DEGREES FAHRENHEIT AND 1B AS 60.0 DEGREES FAHRENHEIT A; Temp Control Device Type: THERMOSTATIC; Second End Nominal Thread Size: 0.438 INCHES IN; First End Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF). 19 total characteristics are documented in the Federal Logistics Information System.