The Valve,safety Relief, cataloged under National Stock Number 4820-00-346-1870, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-346-1870 |
| Primary Part Number | 850159 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp |
| Status | ACTIVE |
| Opening Pressure Setting | 165.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Attachment Method | THREADED |
| Material | COPPER ALLOY OVERALL |
| Operating Pressure | 180.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Thread Series Designator | NPT ALL ENDS |
| Style Designator | ANGLE |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Bonnet Type | INSIDE SPRING |
| Media for Which Designed | FUEL/OIL, HYDROCARBON FIRST RESPONSE |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Valve Operation Method | AUTOMATIC OR MANUAL |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Flow Control Device | POPPET |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 850159 PRIMARY | Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA) |
| 850159PSI165 | Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA) |
NSN 4820-00-346-1870 is a Valve,safety Relief, manufactured by Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-346-1870 has 2 cross-referenced part numbers: 850159 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp), 850159PSI165 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp).
There is 1 known substitute for 4820-00-346-1870: 3120-00-374-4172. Verify interchangeability with system specifications before substitution.
Key specifications for 850159: Opening Pressure Setting: 165.0 POUNDS PER SQUARE INCH LBS; Bonnet Attachment Method: THREADED; Material: COPPER ALLOY OVERALL; Operating Pressure: 180.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS. 14 total characteristics are documented in the Federal Logistics Information System.