The Valve,safety Relief, cataloged under National Stock Number 4820-01-171-8748, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 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 | 4820-01-171-8748 |
| Primary Part Number | 20099F51SS |
| 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 |
| Flow Control Device | DISK |
| Connection Type | FLANGE ALL ENDS |
| Bonnet Attachment Method | THREADED |
| Valve Operation Method | AUTOMATIC |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Raised Face Nominal Diameter | 0.062 INCHES ALL ENDS IN |
| Raised Face Nominal Height | 1.375 INCHES ALL ENDS IN |
| Operating Pressure | 275.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thickness | 0.500 INCHES ALL ENDS IN |
| Style Designator | ANGLE FLANGED ENDS |
| Second Connection Face to Centerline Distance | 3.250 INCHES IN |
| Bonnet Type | INSIDE SCREW |
| First Connection Face to Centerline Distance | 3.250 INCHES IN |
| Material | STEEL COMP 316 STEM |
| Nominal Outside Diameter | 3.875 INCHES ALL ENDS IN |
| Flange Shape | ROUND ALL ENDS |
| Adjustable Pressure Range | +30.0 TO 34.0 POUNDS PER SQUARE INCH LBS |
| Valve Size | 0.750 INCHES IN |
| Material | STEEL BODY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20099F51SS PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20099 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| CKCNN04CDD | Dante Valve Company (USA) |
| CKCNN04CDD | Danco Valve Company (USA) |
| 20099F51SS | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| DX62FF-04 3/4INCH | Danco Valve Company (USA) |
| CKCNN04JDD | Dante Valve Company (USA) |
NSN 4820-01-171-8748 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 4820-01-171-8748 has 7 cross-referenced part numbers: 20099F51SS (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20099 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), CKCNN04CDD (Dante Valve Company), CKCNN04CDD (Danco Valve Company), 20099F51SS (Anderson Greenwood Lp Dba Anderson Greenwood Crosby) and 2 more.
There are 12 known substitutes for 4820-01-171-8748: 6615-00-211-2571, 5330-00-599-4453, 2520-00-766-7607 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20099F51SS: Flow Control Device: DISK; Connection Type: FLANGE ALL ENDS; Bonnet Attachment Method: THREADED; Valve Operation Method: AUTOMATIC. 19 total characteristics are documented in the Federal Logistics Information System.