Part Number
Definition:
A VALVE CONSISTING OF A SINGLE DEADWEIGHT LOADED DISK, OR TWO DEADWEIGHT LOADED DISKS EACH WITH A SEPERATE SEAT. IT IS SPECIFICALLY DESIGNED FOR THE RELIEF OF SMALL PRESSURE AND VACUUM CONDITIONS WITHIN A TANK OR OTHER CONTAINER TO OR FROM THE ATMOSPHERE. THE CENTER OF A SINGLE DEADWEIGHT LOADED DISK MAY CONTAIN A SPRING LOADED DISK FORMING AN ADDITIONAL SEAT OR APERTURE. IT MAY BE SPRING LOADED AND/OR EQUIPPED WITH A MANUAL UNLOADER ON EITHER THE PRESSURE OR VACUUM SIDE. EXCLUDE VALVE, VACUUM BREAKING.
CAGE Information
| Code | Company |
|---|---|
| 98021 | HALKEY-ROBERTS CORPORATION |
Federal Supply Class
Title
VALVES, NONPOWERED
Inclusions:
INCLUDES AUTOMATIC NONPOWERED VALVES; GATE, GLOBE, ANGLE, CHECK, AND RELIEF VALVES; COCKS.
Exclusions:
EXCLUDES FIRE HYDRANTS (FSC 4210); SPRINKLER HEADS (FSC 4210); VALVES SPECIFICALLY DESIGNED FOR USE WITH FIRE FIGHTING EQUIPMENT (FSC 4210); PLUMBING EQUIPMENT, AND THE LIKE (FSC 4540).
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| ACTK | FIRST END SEAT RADIUS | ANY ACCEPTABLE |
| ACSH | SEAT MATERIAL | RUBBER, BUNA-N |
| ADSV | OPENING PRESSURE SETTING | 1.5 POUNDS PER SQUARE INCH |
| ACLJ | FIRST END THREAD SIZE AND SERIES/TYPE DESIGNATOR | 0.875-32 NONSTANDARD |
| AFLG | ABSOLUTE PRESSURE SETTING | 1.5 |
| ACKL | MEDIA FOR WHICH DESIGNED | AIR |
| ADQZ | END CONNECTION QUANTITY | 1 |
| AAJP | OUTSIDE SURFACE TREATMENT | ANODIZED |
| ACLL | FIRST END THREAD DIRECTION | RIGHT-HAND |
| ABJH | TEMP RATING | 300.0 DEG FAHRENHEIT |
| AAJJ | MAXIMUM OPERATING PRESSURE | 1.5 POUNDS PER SQUARE INCH |
| AFLE | VALVE VENTING DESIGN TYPE | ATMOSPHERIC |
| ACLH | FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.875 INCHES NOMINAL |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADSU | DISK LOADING METHOD | SPRING |
| ACKN | FIRST END STYLE DESIGNATOR | PLAIN |
| ABJH | TEMP RATING | 180.0 DEG FAHRENHEIT |
| ACLK | FIRST END THREAD CLASS | 2A |
| AAFZ | BODY MATERIAL | ALUMINUM ALLOY |
| ACKM | FIRST END CONNECTION TYPE | THREADED EXTERNAL TUBE |
| AAQL | BODY STYLE | SINGLE CONNECTION, STRAIGHT FLOW |