The Valve,safety Relief, cataloged under National Stock Number 4820-01-187-1970, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Dante Valve Company. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 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 | 4820-01-187-1970 |
| Primary Part Number | D48DUU-04 3/4 INCH |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Connection Style | SOCKET ALL ENDS |
| Flow Control Device | DISK |
| Disk Loading Method | SPRING |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Nominal Pipe Size Accommodated | 1.040 INCHES SECOND END IN |
| Material | NICKEL ALLOY BODY |
| Adjustable Pressure Range | +138.0 TO 153.0 POUNDS PER SQUARE INCH LBS |
| Style Designator | ANGLE |
| Nominal Pipe Size Accommodated | 1.315 INCHES FIRST END IN |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20251 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| D48DUU-04 3/4 INCH PRIMARY | Dante Valve Company (USA) |
| 20251-8-926SS PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| D48UU-04 3/4 INCH | Dante Valve Company (USA) |
| D48DUU-04 3/4 INCH | Danco Valve Company (USA) |
NSN 4820-01-187-1970 is a Valve,safety Relief, manufactured by Dante Valve Company, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-187-1970 has 5 cross-referenced part numbers: 20251 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), D48DUU-04 3/4 INCH (Dante Valve Company), 20251-8-926SS (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), D48UU-04 3/4 INCH (Dante Valve Company), D48DUU-04 3/4 INCH (Danco Valve Company).
There are 12 known substitutes for 4820-01-187-1970: 5315-00-027-2025, 5999-00-035-8709, 5315-00-198-5967 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for D48DUU-04 3/4 INCH: Connection Style: SOCKET ALL ENDS; Flow Control Device: DISK; Disk Loading Method: SPRING; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 10 total characteristics are documented in the Federal Logistics Information System.