The Valve,safety Relief, cataloged under National Stock Number 4820-01-180-1757, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-180-1757 |
| Primary Part Number | 20211 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| Status | ACTIVE |
| Bonnet Attachment Method | BOLTED |
| Disk Loading Method | SPRING |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Bonnet Type | INSIDE SPRING |
| Material | COPPER ALLOY OVERALL |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Flow Control Device | DISK OR STEM |
| Valve Operation Method | AUTOMATIC |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Criticality Code Justification | ZZZY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20211 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 202114GM11M | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-01-180-1757 is a Valve,safety Relief, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-180-1757 has 2 cross-referenced part numbers: 20211 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 202114GM11M (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There are 11 known substitutes for 4820-01-180-1757: 3110-00-156-6867, 5120-00-228-9507, 3810-00-730-6189 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20211: Bonnet Attachment Method: BOLTED; Disk Loading Method: SPRING; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Bonnet Type: INSIDE SPRING. 10 total characteristics are documented in the Federal Logistics Information System.