The Valve,check, cataloged under National Stock Number 4820-00-810-0988, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-810-0988 |
| Primary Part Number | 5-1662-3 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit |
| Status | CANCELLED |
| Flow Control Device | POPPET |
| Maximum Operating Temp | 200.0 FAHRENHEIT THIRD RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 20 ALL ENDS |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material | STEEL COMP 304 AND RUBBER SYNTHETIC FLOW CONTROL DEVICE |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Maximum Operating Temp | 200.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Material | COPPER ALLOY SEAT |
| Thread Series Designator | UNF ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Material | COPPER ALLOY BODY |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM THIRD RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Maximum Operating Temp | 200.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Valve Operation Method | AUTOMATIC |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Material Document and Classification | 66 FED STD 1ST MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 4820-00-810-0988 is a Valve,check, manufactured by Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-810-0988 has 2 cross-referenced part numbers: 5-1662-3 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit), 488-4-1 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit).
There are 3 known substitutes for 4820-00-810-0988: 5330-00-641-2229, 4920-00-756-4278, 5940-00-964-1217. Verify interchangeability with system specifications before substitution.
Key specifications for 5-1662-3: Flow Control Device: POPPET; Maximum Operating Temp: 200.0 FAHRENHEIT THIRD RESPONSE DEGF; Disk Loading Method: SPRING; Thread Class: 3A ALL ENDS A. 24 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-810-0988 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.