The Valve,safety Relief, cataloged under National Stock Number 4820-01-168-5674, 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 15 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-168-5674 |
| Primary Part Number | 20186Y51M |
| 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 |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Disk Loading Method | SPRING |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Material | NICKEL ALLOY BODY LINING |
| Bonnet Type | INSIDE SPRING |
| Criticality Code Justification | ZZZY |
| Opening Pressure Setting | 401.0 POUNDS PER SQUARE INCH LBS |
| Flow Control Device | DISK |
| Valve Operation Method | AUTOMATIC |
| Connection Type | BUTT WELD PIPE FIRST END |
| Style Designator | STRAIGHT THRU |
| Material | COPPER ALLOY 922 BODY |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Renewable Seat Ring Type | RETAINING SCREW |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-168-5674 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 4820-01-168-5674 has 2 cross-referenced part numbers: 20186Y51M (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20186 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There are 9 known substitutes for 4820-01-168-5674: 3030-00-015-3606, 3010-00-316-1984, 5985-00-466-2404 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20186Y51M: Bonnet Attachment Method: BOLTED; Material: NICKEL ALLOY FLOW CONTROL DEVICE; Disk Loading Method: SPRING; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS. 15 total characteristics are documented in the Federal Logistics Information System.