The Valve,safety Relief, cataloged under National Stock Number 4820-01-180-6691, 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 9 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 | 4820-01-180-6691 |
| 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 Type | INSIDE SPRING |
| Flow Control Device | DISK OR STEM |
| Operating Pressure | 2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Criticality Code Justification | ZZZY |
| Valve Operation Method | AUTOMATIC |
| Disk Loading Method | SPRING |
| Material | COPPER ALLOY OVERALL |
| Bonnet Attachment Method | BOLTED |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20211 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 2021114BM11M | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-01-180-6691 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 4820-01-180-6691 has 2 cross-referenced part numbers: 20211 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 2021114BM11M (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There are 11 known substitutes for 4820-01-180-6691: 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 Type: INSIDE SPRING; Flow Control Device: DISK OR STEM; Operating Pressure: 2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Criticality Code Justification: ZZZY. 9 total characteristics are documented in the Federal Logistics Information System.