The Valve,safety Relief, cataloged under National Stock Number 4820-01-182-0781, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-182-0781 |
| Primary Part Number | 20271HS41M |
| 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 |
| Flow Control Device | DISK |
| Connection Style | SOCKET WITH BRAZING RING ALL ENDS |
| Material | COPPER ALLOY BODY |
| Bonnet Type | INSIDE SCREW |
| Bonnet Attachment Method | BOLTED |
| Material | NICKEL ALLOY SEAT |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Adjustable Pressure Range | +45.0 TO 55.0 POUNDS PER SQUARE INCH LBS |
| Nominal Pipe Size Accommodated | 0.500 INCHES ALL ENDS IN |
| Material | NICKEL ALLOY STEM |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Valve Operation Method | AUTOMATIC |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20271HS41M PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| D52UU-05 1/4 | Danco Valve Company (USA) |
| 20271HS41M | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 20271 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| D52UU-05 1/4 | Dante Valve Company (USA) |
NSN 4820-01-182-0781 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 4820-01-182-0781 has 5 cross-referenced part numbers: 20271HS41M (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), D52UU-05 1/4 (Danco Valve Company), 20271HS41M (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20271 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), D52UU-05 1/4 (Dante Valve Company).
There are 10 known substitutes for 4820-01-182-0781: 5940-00-143-4663, 5310-00-274-9870, 4310-00-468-0031 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20271HS41M: Flow Control Device: DISK; Connection Style: SOCKET WITH BRAZING RING ALL ENDS; Material: COPPER ALLOY BODY; Bonnet Type: INSIDE SCREW. 15 total characteristics are documented in the Federal Logistics Information System.