The Valve,safety Relief, cataloged under National Stock Number 4820-01-063-3819, 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 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-063-3819 |
| Primary Part Number | 20138H51SS |
| 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 |
| Material Document and Classification | ASTM A276,TYPE 304 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | ASTM A216,GRADE WCB ASSN STD SINGLE MATERIAL RESPONSE BODY |
| First Connection Face to Centerline Distance | 3.160 INCHES IN |
| Connection Type | FLANGE ALL ENDS |
| Nominal Thickness | 0.500 INCHES ALL ENDS IN |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Valve Size | 0.500 INCHES IN |
| Nominal Outside Diameter | 3.500 INCHES ALL ENDS IN |
| Bolt Circle Nominal Diameter | 2.435 INCHES ALL ENDS IN |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Material | STEEL FLOW CONTROL DEVICE |
| Second Connection Face to Centerline Distance | 3.160 INCHES IN |
| Furnished Items and Quantity | 1 WRENCH |
| Adjustable Pressure Range | +45.0 TO 75.0 POUNDS PER SQUARE INCH LBS |
| Material | STEEL SEAT |
| Style Designator | ANGLE FLANGED ENDS |
| Flow Control Device | DISK |
| Bolt Hole Nominal Diameter | 0.618 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| Material Document and Classification | ASTM A276,TYPE 304 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Maximum Operating Temp | 397.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Raised Face Nominal Height | 0.110 INCHES ALL ENDS IN |
| Opening Pressure Setting | 50.0 POUNDS PER SQUARE INCH LBS |
| Material | STEEL BODY |
| Valve Operation Method | AUTOMATIC |
| Raised Face Nominal Diameter | 1.378 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20138H51SS PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 16047 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20138H51SS | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 16047 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-01-063-3819 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 4820-01-063-3819 has 4 cross-referenced part numbers: 20138H51SS (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 16047 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20138H51SS (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 16047 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There are 5 known substitutes for 4820-01-063-3819: 2810-00-118-4085, 5120-00-287-2130, 4720-00-415-4652 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20138H51SS: Material Document and Classification: ASTM A276,TYPE 304 ASSN STD SINGLE MATERIAL RESPONSE SEAT; Material Document and Classification: ASTM A216,GRADE WCB ASSN STD SINGLE MATERIAL RESPONSE BODY; First Connection Face to Centerline Distance: 3.160 INCHES IN; Connection Type: FLANGE ALL ENDS. 28 total characteristics are documented in the Federal Logistics Information System.