The Valve,safety Relief, cataloged under National Stock Number 4820-01-127-6670, 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 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-127-6670 |
| Primary Part Number | 20264 |
| 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 |
| Bonnet Attachment Method | BOLTED |
| Operating Pressure | 700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Outside Diameter | 3.688 INCHES ALL ENDS IN |
| Style Designator | ANGLE FLANGED ENDS |
| Material | NICKEL ALLOY STEM |
| Second Connection Face to Centerline Distance | 3.375 INCHES IN |
| Media for Which Designed | LIQUID, INGESTED SINGLE RESPONSE |
| Material Document and Classification | MIL-C-20159 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Adjustable Pressure Range | +401.0 TO 550.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| Valve Size | 0.750 INCHES IN |
| Material | NICKEL ALLOY BODY |
| Connection Type | FLANGE ALL ENDS |
| Material | NICKEL ALLOY SEAT |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Flange Shape | ROUND ALL ENDS |
| Flange Face Design | PLAIN FIRST END |
| Flow Control Device | DISK |
| Nominal Thickness | 0.625 INCHES ALL ENDS IN |
| First Connection Face to Centerline Distance | 3.375 INCHES IN |
| Bonnet Type | INSIDE SPRING |
| Disk Loading Method | SPRING |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20264 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20264 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 2026401R0401 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20264DM41M | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 20264DM41M PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20264DM41M | Asrc Federal Facilities Logistics, Llc (USA) |
NSN 4820-01-127-6670 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 4820-01-127-6670 has 6 cross-referenced part numbers: 20264 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20264 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 2026401R0401 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20264DM41M (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20264DM41M (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team) and 1 more.
There are 8 known substitutes for 4820-01-127-6670: 5935-00-149-3230, 3110-00-157-6083, 5962-01-099-4819 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20264: Bonnet Attachment Method: BOLTED; Operating Pressure: 700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Nominal Outside Diameter: 3.688 INCHES ALL ENDS IN; Style Designator: ANGLE FLANGED ENDS. 24 total characteristics are documented in the Federal Logistics Information System.