The Valve,safety Relief, cataloged under National Stock Number 4820-00-851-4111, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Parker-Hannifin Corporation Div Hydraulic Accumulator Division. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-851-4111 |
| Primary Part Number | 10685 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Parker-Hannifin Corporation Div Hydraulic Accumulator Division |
| Status | CANCELLED |
| Opening Pressure Setting | 80.0 POUNDS PER SQUARE INCH LBS |
| Surface Treatment Document and Classification | MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Material | ALUMINUM ALLOY BODY |
| Valve Discharge Flow Rate | 12.0 GALLONS PER MINUTE |
| Material | STEEL CORROSION RESISTING AND RUBBER SYNTHETIC FLOW CONTROL DEVICE |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Nominal Thread Size | 1.312 INCHES ALL ENDS IN |
| Material | ALUMINUM ALLOY SEAT |
| Flow Control Device | DISK |
| Surface Treatment | ANODIZE LOCATION NOT OTHERWISE SPECIFIED |
| Valve Operation Method | AUTOMATIC |
| Features Provided | PRESSURE TIGHT OUTLET SIDE |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | ANGLE |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Outside Diameter Tube Accommodated | 1.000 INCHES FIRST END IN |
| Thread Class | 3A ALL ENDS A |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Disk Loading Method | WEIGHT |
| Thread Series Designator | UN ALL ENDS |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 10685 | Parker-Hannifin Corporation Div Hydraulic Accumulator Division (USA) |
| 4-2959-13 | Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA) |
| 629X3-16 | Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA) |
| B10685 | Parker-Hannifin Corporation Div Hydraulic Accumulator Division (USA) |
| 4-2959-11 | Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA) |
NSN 4820-00-851-4111 is a Valve,safety Relief, manufactured by Parker-Hannifin Corporation Div Hydraulic Accumulator Division, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-851-4111 has 5 cross-referenced part numbers: 10685 (Parker-Hannifin Corporation Div Hydraulic Accumulator Division), 4-2959-13 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit), 629X3-16 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit), B10685 (Parker-Hannifin Corporation Div Hydraulic Accumulator Division), 4-2959-11 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit).
There are 10 known substitutes for 4820-00-851-4111: 1075-00-105-3935, 6610-00-159-1109, 4030-00-246-4531 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 10685: Opening Pressure Setting: 80.0 POUNDS PER SQUARE INCH LBS; Surface Treatment Document and Classification: MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED; Material: ALUMINUM ALLOY BODY; Valve Discharge Flow Rate: 12.0 GALLONS PER MINUTE. 24 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-851-4111 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.