The Valve,safety Relief, cataloged under National Stock Number 4820-01-369-1991, 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 16 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 | 4820-01-369-1991 |
| Primary Part Number | 20183D01R0045 |
| 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 |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Style Designator | ANGLE |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | NICKEL ALLOY STEM |
| Bonnet Attachment Method | BOLTED |
| Material | BRONZE BODY |
| Connection Style | SOCKET WITH BRAZING RING ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Adjustable Pressure Range | +45.0 TO 55.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Type | INSIDE SPRING |
| Nominal Pipe Size Accommodated | 0.750 INCHES ALL ENDS IN |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | NICKEL ALLOY SEAT |
| Valve Operation Method | AUTOMATIC |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Flow Control Device | DISK |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20183 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 20183D01R0045 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20183D03R0045 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20183HM41M | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20183HM41M | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-01-369-1991 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 4820-01-369-1991 has 5 cross-referenced part numbers: 20183 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20183D01R0045 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20183D03R0045 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20183HM41M (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20183HM41M (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There are 12 known substitutes for 4820-01-369-1991: 4820-01-131-0229, 4820-01-132-1599, 3040-01-152-8322 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20183D01R0045: Media for Which Designed: WATER-OIL-GAS SINGLE RESPONSE; Style Designator: ANGLE; Operating Pressure: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Material: NICKEL ALLOY STEM. 16 total characteristics are documented in the Federal Logistics Information System.