The Valve,safety Relief, cataloged under National Stock Number 4820-01-225-5798, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division. Government technical data includes 15 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-225-5798 |
| Primary Part Number | 622B-4-3/4-1 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division |
| Status | ACTIVE |
| Media for Which Designed | WATER, FRESH SECOND RESPONSE |
| Material | ALUMINUM ALLOY BODY |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Flow Control Device | POPPET |
| Adjustable Pressure Range | +115.0 TO 250.0 POUNDS PER SQUARE INCH LBS |
| Media for Which Designed | OIL FIRST RESPONSE |
| Maximum Operating Temp | 200.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Valve Operation Method | AUTOMATIC |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Maximum Operating Temp | -67.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Thread Series Designator | NPT ALL ENDS |
| Operating Pressure | 3600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Style Designator | ANGLE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 622B-4-3/4-1 | Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA) |
| 622B-4-3/4-1 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
| 105312-1 | L3harris Technologies, Inc. Div Space and Airborne Systems (USA) |
| 105312 | L3harris Technologies, Inc. Div Space and Airborne Systems (USA) |
NSN 4820-01-225-5798 is a Valve,safety Relief, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-225-5798 has 4 cross-referenced part numbers: 622B-4-3/4-1 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit), 622B-4-3/4-1 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division), 105312-1 (L3harris Technologies, Inc. Div Space and Airborne Systems), 105312 (L3harris Technologies, Inc. Div Space and Airborne Systems).
There are 4 known substitutes for 4820-01-225-5798: 4720-00-477-3301, 5910-00-813-6445, 5935-00-839-8961 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 622B-4-3/4-1: Media for Which Designed: WATER, FRESH SECOND RESPONSE; Material: ALUMINUM ALLOY BODY; Thread Direction: RIGHT-HAND ALL ENDS; Flow Control Device: POPPET. 15 total characteristics are documented in the Federal Logistics Information System.