The Valve,safety Relief, cataloged under National Stock Number 4820-01-148-6940, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is American Society for Testing and Materials Dba Astm International. Government technical data includes 23 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-148-6940 |
| Primary Part Number | ASTM F1508-965CCWWB122 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | American Society for Testing and Materials Dba Astm International |
| Status | ACTIVE |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Thread Direction | RIGHT-HAND SECOND END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Bonnet Type | INSIDE SCREW |
| Disk Loading Method | SPRING |
| Connection Style | PLAIN,OPTIONAL END(PIPE) FIRST END |
| Material | COPPER ALLOY OVERALL |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Nondefinitive Spec/std Data | 7 CLASS AND A STYLE AND 2 TYPE |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Style Designator | ANGLE |
| Opening Pressure Setting | 128.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | MANUAL |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Thread Series Designator | NPT FIRST END |
| Thread Series Designator | NPT SECOND END |
| Flow Control Device | DISK |
| Bonnet Attachment Method | BOLTED |
| Features Provided | PRESSURE TIGHT OUTLET SIDE |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| ASTM F1508 | American Society for Testing and Materials Dba Astm International (USA) |
| ASTM F1508-965CCWWB122 PRIMARY | American Society for Testing and Materials Dba Astm International (USA) |
| MIL-V-18634 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 5013600 FIND 13 | Naval Sea Systems Command (USA) |
NSN 4820-01-148-6940 is a Valve,safety Relief, manufactured by American Society for Testing and Materials Dba Astm International, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-148-6940 has 4 cross-referenced part numbers: ASTM F1508 (American Society for Testing and Materials Dba Astm International), ASTM F1508-965CCWWB122 (American Society for Testing and Materials Dba Astm International), MIL-V-18634 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 5013600 FIND 13 (Naval Sea Systems Command).
There are 2 known substitutes for 4820-01-148-6940: 4820-00-293-7670, 4820-00-294-2683. Verify interchangeability with system specifications before substitution.
Key specifications for ASTM F1508-965CCWWB122: Maximum Operating Temp: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF; Thread Direction: RIGHT-HAND SECOND END; Connection Style: PLAIN (PIPE) SECOND END; Thread Direction: RIGHT-HAND FIRST END. 24 total characteristics are documented in the Federal Logistics Information System.