The Valve,safety Relief, cataloged under National Stock Number 4820-00-814-1858, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-814-1858 |
| Primary Part Number | 1485 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | CANCELLED |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Media for Which Designed | OIL SECOND RESPONSE |
| Opening Pressure Setting | 200.0 POUNDS PER SQUARE INCH LBS |
| Material | COPPER ALLOY OVERALL |
| Disk Loading Method | SPRING |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Flow Control Device | DISK |
| Maximum Operating Temp | 406.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Valve Operation Method | AUTOMATIC |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Bonnet Type | INSIDE SPRING |
| Nominal Pipe Size Accommodated | 0.500 INCHES ALL ENDS IN |
| Media for Which Designed | WATER, FRESH FIRST RESPONSE |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Features Provided | PRESSURE TIGHT OUTLET SIDE |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Style Designator | ANGLE |
| Bonnet Attachment Method | THREADED |
| Thread Series Designator | NPT ALL ENDS |
| Valve Discharge Flow Rate | 35.9 GALLONS PER MINUTE |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1485 | Ashcroft Inc Dba Heise (USA) |
| 1485-1-2-200PSI | Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse (USA) |
NSN 4820-00-814-1858 is a Valve,safety Relief, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-814-1858 has 2 cross-referenced part numbers: 1485 (Ashcroft Inc Dba Heise), 1485-1-2-200PSI (Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse).
There are 12 known substitutes for 4820-00-814-1858: 5315-00-014-1287, 5999-00-034-7444, 5360-00-049-3517 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1485: Thread Direction: RIGHT-HAND ALL ENDS; Media for Which Designed: OIL SECOND RESPONSE; Opening Pressure Setting: 200.0 POUNDS PER SQUARE INCH LBS; Material: COPPER ALLOY OVERALL. 20 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-814-1858 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.