The Valve,safety Relief, cataloged under National Stock Number 4820-01-440-7749, 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 28 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-440-7749 |
| Primary Part Number | 20243C41SS |
| 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 |
| Nominal Thickness | 0.875 INCHES ALL ENDS IN |
| Material | STEEL UNS J03002 BODY |
| First Connection Face to Centerline Distance | 5.500 INCHES IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Raised Face Nominal Diameter | 4.120 INCHES ALL ENDS IN |
| Valve Size | 2.500 INCHES IN |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Maximum Operating Temp | 500.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Valve Operation Method | AUTOMATIC |
| Material | STEEL COMP 303 FLOW CONTROL DEVICE |
| Material | STEEL UNS J92600 SEAT |
| Material | STEEL COMP 303 STEM |
| Material Document and Classification | ASTM A351, GR. CF8 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Adjustable Pressure Range | +15.0 TO 19.0 POUNDS PER SQUARE INCH LBS |
| Material Document and Classification | ASTM A582, COMP 303 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM A582, COMP 303 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Operating Pressure | 225.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Bolt Circle Nominal Diameter | 5.500 INCHES ALL ENDS IN |
| Bolt Hole Nominal Diameter | 0.750 INCHES ALL ENDS IN |
| Second Connection Face to Centerline Distance | 5.500 INCHES IN |
| Nominal Outside Diameter | 7.000 INCHES ALL ENDS IN |
| Flow Control Device | DISK |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Raised Face Nominal Height | 0.062 INCHES ALL ENDS IN |
| Material Document and Classification | ASTM A216, GR. WCB ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Style Designator | ANGLE FLANGED ENDS |
| Disk Loading Method | SPRING |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| CASNN03SJJ | Danco Valve Company (USA) |
| 20243C41SS PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20243 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 20243C41SS | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| CASNN03SJJ PRIMARY | Dante Valve Company (USA) |
NSN 4820-01-440-7749 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 4820-01-440-7749 has 5 cross-referenced part numbers: CASNN03SJJ (Danco Valve Company), 20243C41SS (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20243 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20243C41SS (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), CASNN03SJJ (Dante Valve Company).
There are 12 known substitutes for 4820-01-440-7749: 2915-00-605-3460, 5975-00-959-1680, 1680-01-044-6168 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20243C41SS: Nominal Thickness: 0.875 INCHES ALL ENDS IN; Material: STEEL UNS J03002 BODY; First Connection Face to Centerline Distance: 5.500 INCHES IN; Bolt Hole Quantity: 4 ALL ENDS. 30 total characteristics are documented in the Federal Logistics Information System.