The Valve,safety Relief, cataloged under National Stock Number 4820-01-221-8855, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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 | 4820-01-221-8855 |
| Primary Part Number | 20152JS91SS |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING STEM |
| Nominal Thickness | 0.562 INCHES ALL ENDS IN |
| Nominal Outside Diameter | 4.250 INCHES ALL ENDS IN |
| Second Connection Face to Centerline Distance | 3.344 INCHES IN |
| Raised Face Nominal Diameter | 2.000 INCHES ALL ENDS IN |
| Bolt Circle Nominal Diameter | 3.125 INCHES ALL ENDS IN |
| Style Designator | ANGLE FLANGED ENDS |
| Bonnet Attachment Method | BOLTED |
| Bonnet Type | INSIDE SCREW |
| First Connection Face to Centerline Distance | 3.594 INCHES IN |
| Raised Face Nominal Height | 0.062 INCHES ALL ENDS IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Bolt Hole Nominal Diameter | 0.625 INCHES ALL ENDS IN |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Maximum Operating Temp | 100.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Adjustable Pressure Range | +89.0 TO 110.0 POUNDS PER SQUARE INCH LBS |
| Material | STEEL CORROSION RESISTING SEAT |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Material | STEEL BODY |
| Valve Operation Method | AUTOMATIC |
| Bolt Hole Quantity | 4 ALL ENDS |
| Valve Size | 1.000 INCHES IN |
| Connection Type | FLANGE ALL ENDS |
| Flow Control Device | DISK |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20152 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 20152 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20152JS91SS | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 20152JS91SS PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
NSN 4820-01-221-8855 is a Valve,safety Relief, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-221-8855 has 4 cross-referenced part numbers: 20152 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20152 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20152JS91SS (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20152JS91SS (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
There are 6 known substitutes for 4820-01-221-8855: 5950-00-135-0782, 5133-00-228-1397, 4310-00-701-1103 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20152JS91SS: Material: STEEL CORROSION RESISTING STEM; Nominal Thickness: 0.562 INCHES ALL ENDS IN; Nominal Outside Diameter: 4.250 INCHES ALL ENDS IN; Second Connection Face to Centerline Distance: 3.344 INCHES IN. 26 total characteristics are documented in the Federal Logistics Information System.