Part Number
Part Number:
NSN:
NIIN:
Item Name:
VALVE , SAFETY RELIEF
Definition:
A VALVE DESIGNED TO AUTOMATICALLY RELEASE EXCESSIVE PRESSURES. IT IS ACTUATED BY STATIC PRESSURE UPSTREAM OF THE VALVE AND IS USED AS A SAFETY VALVE OR RELIEF VALVE, AND MAY BE SET TO CLOSE AT A PREDETERMINED PRESSURE. IT IS NOT DESIGNED FOR REGULATION OF CONTINUOUSLY FLUCTUATING LOADS. IT MAY BE INLINE OR CARTRIDGE (MANIFOLD) DESIGN. EXCLUDES VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.
CAGE Information
| Code | Company |
|---|---|
| 81349 | MILITARY SPECIFICATIONS PROMULGATED |
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 |
|---|---|---|
| ADZH | RENEWABLE SEAT RING TYPE | PRESSED-IN |
| TMQY | FURNISHED ITEMS AND QUANTITY | 1 PLUGGED DRAIN AND 2 TAILPIECE AND 2 NUT AND 1 RELIEF PLUG |
| ADSR | BONNET TYPE | INSIDE SPRING |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM B-61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | 1" RELIEF VALVE TYPE 1751T |
| ADST | BONNET ATTACHMENT METHOD | BOLTED |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| ADQU | FLOW CONTROL DEVICE | DISK |
| MATT | MATERIAL | NICKEL ALLOY FLOW CONTROL DEVICE |
| AAAR | NOMINAL PIPE SIZE ACCOMMODATED | 1.000 INCHES ALL ENDS |
| STYL | STYLE DESIGNATOR | ERR-090 |
| MATT | MATERIAL | NICKEL ALLOY SEAT |
| FEAT | SPECIAL FEATURES | PFOR GAS SERVICE; VENT MUST BE OPEN TO ATMOSPHERE OR PIPED TO DOWNSTREAM PIPING; VENT PLUG (FIND NO. 27) AND ASSOCIATED O-RING (FIND NO. 28) ARE NOT TO BE INSTALLED WHEN VALVE IS USED IN AN AIR SYSTEM; HAS MONEL TRIM |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC 1ST MATERIAL RESPONSE FLOW CONTROL DEVICE AND AMS 3660 ASSN STD 2ND MATERIAL RESPONSE FLOW CONTROL DEVICE |
| ADSU | DISK LOADING METHOD | SPRING |
| AWLS | CONNECTION TYPE | UNTHREADED INTERNAL PIPE ALL ENDS |
| AEHZ | MAXIMUM OPERATING TEMP | 165.0 DEG FAHRENHEIT SINGLE RESPONSE |
| CQGM | MAXIMUM OPERATING PRESSURE | 1500.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MATT | MATERIAL | NICKEL ALLOY STEM |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| AHNC | CONNECTION STYLE | SOCKET ERR-100 |
| CQCY | ADJUSTABLE PRESSURE RANGE | +76.0/+90.0 POUNDS PER SQUARE INCH |
| MATT | MATERIAL | COPPER ALLOY 922 BODY |