The Valve,safety Relief, cataloged under National Stock Number 4820-00-976-0348, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Circor Aerospace, Inc. Dba Circor Aerospace Inc. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-976-0348 |
| Primary Part Number | 559B-2M-15 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Circor Aerospace, Inc. Dba Circor Aerospace Inc |
| Status | ACTIVE |
| Disk Loading Method | SPRING |
| Connection Style | PLAIN (PIPE) FIRST END |
| Media for Which Designed | AMMONIA, LIQUID THIRD RESPONSE |
| Media for Which Designed | AIR SECOND RESPONSE |
| Media for Which Designed | ACETYLENE FIRST RESPONSE |
| Thread Direction | RIGHT-HAND FIRST END |
| Media for Which Designed | GAS, INERT FOURTH RESPONSE |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Media for Which Designed | HYDROGEN FIFTH RESPONSE |
| Style Designator | STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY. |
| Material | COPPER ALLOY OVERALL |
| Flow Control Device | POPPET |
| Valve Operation Method | AUTOMATIC |
| Surface Treatment | CHROMIUM LOCATION NOT OTHERWISE SPECIFIED |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Opening Pressure Setting | 15.0 POUNDS PER SQUARE INCH LBS |
| Thread Series Designator | NPT FIRST END |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 559B-2M-15 PRIMARY | Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA) |
| 11779 | Spx Corporation Dba Dielectric Communications Div Spx Communication Technologies (USA) |
| 11779 PT NO. 12 | Spx Corporation Dba Dielectric Communications Div Spx Communication Technologies (USA) |
NSN 4820-00-976-0348 is a Valve,safety Relief, manufactured by Circor Aerospace, Inc. Dba Circor Aerospace Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-976-0348 has 3 cross-referenced part numbers: 559B-2M-15 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), 11779 (Spx Corporation Dba Dielectric Communications Div Spx Communication Technologies), 11779 PT NO. 12 (Spx Corporation Dba Dielectric Communications Div Spx Communication Technologies).
There are 6 known substitutes for 4820-00-976-0348: 5360-00-084-3350, 3040-00-110-8314, 4720-00-450-9156 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 559B-2M-15: Disk Loading Method: SPRING; Connection Style: PLAIN (PIPE) FIRST END; Media for Which Designed: AMMONIA, LIQUID THIRD RESPONSE; Media for Which Designed: AIR SECOND RESPONSE. 20 total characteristics are documented in the Federal Logistics Information System.