The Valve,safety Relief, cataloged under National Stock Number 4820-00-585-8566, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Henry Technologies, Inc.. Government technical data includes 23 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-585-8566 |
| Primary Part Number | 5221 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Henry Technologies, Inc. |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.250 INCHES FIRST END IN |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Material | COPPER ALLOY STEM |
| Material | STEEL SEAT |
| Maximum Operating Temp | 200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Valve Operation Method | AUTOMATIC |
| Opening Pressure Setting | 325.0 POUNDS PER SQUARE INCH LBS |
| Disk Loading Method | SPRING |
| Flow Control Device | DISK |
| Bonnet Type | INSIDE SPRING |
| Features Provided | VALVE STEM LOCK SHIELD |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Material | COPPER ALLOY BODY |
| Operating Pressure | 350.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Style Designator | ANGLE |
| Thread Series Designator | NPT FIRST END |
| Thread Direction | RIGHT-HAND FIRST END |
| Bonnet Attachment Method | INTEGRAL |
| Material | COPPER ALLOY AND RUBBER SYNTHETIC FLOW CONTROL DEVICE |
| Connection Style | PLAIN (PIPE) FIRST END |
| Valve Discharge Flow Rate | 504.0 POUNDS PER HOUR LBS |
| Thread Quantity Per Inch | 18 FIRST END |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-585-8566 is a Valve,safety Relief, manufactured by Henry Technologies, Inc., classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-585-8566 has 2 cross-referenced part numbers: 5221 (Henry Technologies, Inc.), 5221-325 (Henry Technologies, Inc.).
There are 12 known substitutes for 4820-00-585-8566: 3110-00-100-0496, 5975-00-100-8716, 5330-00-171-9010 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 5221: Nominal Pipe Size Accommodated: 0.250 INCHES FIRST END IN; Connection Type: THREADED EXTERNAL PIPE FIRST END; Material: COPPER ALLOY STEM; Material: STEEL SEAT. 23 total characteristics are documented in the Federal Logistics Information System.