The Valve,safety Relief, cataloged under National Stock Number 4820-01-127-3845, 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 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-127-3845 |
| Primary Part Number | 2020501H0136 |
| 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 |
| Bonnet Attachment Method | BOLTED |
| Valve Operation Method | AUTOMATIC |
| Bonnet Type | INSIDE SPRING |
| Adjustable Pressure Range | +136.0 TO 155.0 POUNDS PER SQUARE INCH LBS |
| Material | COPPER ALLOY BODY |
| Flange Shape | ROUND ALL ENDS |
| Nominal Outside Diameter | 6.250 INCHES ALL ENDS IN |
| Material | NICKEL ALLOY STEM |
| First Connection Face to Centerline Distance | 6.000 INCHES IN |
| Second Connection Face to Centerline Distance | 6.000 INCHES IN |
| Style Designator | ANGLE FLANGED ENDS |
| Material Document and Classification | QQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material | NICKEL ALLOY SEAT |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Operating Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Flow Control Device | DISK |
| Valve Size | 3.000 INCHES IN |
| Media for Which Designed | LIQUID, INGESTED SINGLE RESPONSE |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Nominal Thickness | 0.938 INCHES ALL ENDS IN |
| Flange Face Design | PLAIN ALL ENDS |
| Disk Loading Method | SPRING |
| Connection Type | FLANGE ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20205-015-41M | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20205 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 20205 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 2020501H0136 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20205-015-41M | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-01-127-3845 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 4820-01-127-3845 has 5 cross-referenced part numbers: 20205-015-41M (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20205 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20205 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 2020501H0136 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20205-015-41M (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There are 12 known substitutes for 4820-01-127-3845: 4310-00-168-8721, 3020-00-221-8777, 5120-00-240-5219 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2020501H0136: Bonnet Attachment Method: BOLTED; Valve Operation Method: AUTOMATIC; Bonnet Type: INSIDE SPRING; Adjustable Pressure Range: +136.0 TO 155.0 POUNDS PER SQUARE INCH LBS. 24 total characteristics are documented in the Federal Logistics Information System.