The Valve,safety Relief, cataloged under National Stock Number 4820-00-001-0037, 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 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-001-0037 |
| Primary Part Number | D559A3M2 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Circor Aerospace, Inc. Dba Circor Aerospace Inc |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU W/BAFFLE |
| Media for Which Designed | AIR FIRST RESPONSE |
| Media for Which Designed | HELIUM SECOND RESPONSE |
| Opening Pressure Setting | 2.0 POUNDS PER SQUARE INCH LBS |
| Surface Treatment Document and Classification | MIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Connection Style | PLAIN (PIPE) FIRST END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Pipe Size Accommodated | 0.375 INCHES FIRST END IN |
| Media for Which Designed | FUEL/OIL, HYDROCARBON THIRD RESPONSE |
| Nominal Thread Size | 0.375 INCHES FIRST END IN |
| Material | ALUMINUM ALLOY 2024 BODY |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Surface Treatment | ANODIZE LOCATION NOT OTHERWISE SPECIFIED |
| Material Document and Classification | QQ-A-225/6,ALLOY2024,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Thread Series Designator | NPT FIRST END |
| Material Document and Classification | QQ-A-225/6,ALLOY2024,T4 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | THREADED |
| Material | ALUMINUM ALLOY 2024 AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE |
| Media for Which Designed | HYDROGEN FOURTH RESPONSE |
| Bonnet Type | INSIDE SCREW |
| Maximum Operating Temp | 280.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Valve Operation Method | AUTOMATIC |
| Material Document and Classification | QQ-A-225/6,ALLOY2024,T4 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Flow Control Device | POPPET |
| Material | ALUMINUM ALLOY 2024 SEAT |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| D559A3M2 PRIMARY | Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA) |
NSN 4820-00-001-0037 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 4820-00-001-0037 has 1 cross-referenced part number: D559A3M2 (Circor Aerospace, Inc. Dba Circor Aerospace Inc).
Key specifications for D559A3M2: Style Designator: STRAIGHT THRU W/BAFFLE; Media for Which Designed: AIR FIRST RESPONSE; Media for Which Designed: HELIUM SECOND RESPONSE; Opening Pressure Setting: 2.0 POUNDS PER SQUARE INCH LBS. 26 total characteristics are documented in the Federal Logistics Information System.