The Valve,check, cataloged under National Stock Number 4820-01-129-7663, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 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 | 4820-01-129-7663 |
| Primary Part Number | 493-6D1-40 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division |
| Status | ACTIVE |
| Material | ALUMINUM ALLOY FLOW CONTROL DEVICE |
| Operating Pressure | 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.562 INCHES ALL ENDS IN |
| Style Designator | STRAIGHT THRU |
| Media for Which Designed | AIR FIRST RESPONSE |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Flow Control Device | DISK |
| Connection Type | THREADED INTERNAL BOSS ALL ENDS |
| Material | ALUMINUM ALLOY BODY |
| Connection Style | GASKET SEAL (BOSS) ALL ENDS |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Material Document and Classification | MIL-P-5315 MIL SPEC SINGLE MATERIAL RESPONSE SEAT |
| Maximum Operating Temp | 160.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Thread Class | 3B ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 80-6156 | Rtx Corporation Div Pratt & Whitney (USA) |
| 80-6156 | Solar Turbines Incorporated Dba Solar Turbines Incorporated (USA) |
| 493-6D1-40 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
| 493-6D1-40 | Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA) |
| 80-6156 | Department of Defense Project Manager-Mobile Electric Power (USA) |
NSN 4820-01-129-7663 is a Valve,check, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-129-7663 has 5 cross-referenced part numbers: 80-6156 (Rtx Corporation Div Pratt & Whitney), 80-6156 (Solar Turbines Incorporated Dba Solar Turbines Incorporated), 493-6D1-40 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division), 493-6D1-40 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit), 80-6156 (Department of Defense Project Manager-Mobile Electric Power).
There is 1 known substitute for 4820-01-129-7663: 5905-00-240-2728. Verify interchangeability with system specifications before substitution.
Key specifications for 493-6D1-40: Material: ALUMINUM ALLOY FLOW CONTROL DEVICE; Operating Pressure: 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Nominal Thread Size: 0.562 INCHES ALL ENDS IN; Style Designator: STRAIGHT THRU. 18 total characteristics are documented in the Federal Logistics Information System.