The Valve,check, cataloged under National Stock Number 4820-01-063-0053, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 23 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-063-0053 |
| Primary Part Number | SS845-2181251ASSY RD 5IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Material Document and Classification | MIL-B-21230 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Valve Operation Method | AUTOMATIC |
| Bolt Hole Quantity | 12 ALL ENDS |
| Material Document and Classification | MIL-B-21230 MIL SPEC SINGLE MATERIAL RESPONSE SEAT |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Maximum Operating Temp | 160.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Connection Type | FLANGE ALL ENDS |
| Material | COPPER ALLOY BODY |
| Nominal Thickness | 1.625 INCHES ALL ENDS IN |
| Operating Pressure | 700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | COPPER ALLOY SEAT |
| Valve Size | 5.000 INCHES IN |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material Document and Classification | MIL-M-1657 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-P-5516, CLASS B MIL SPEC 2ND MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Bolt Circle Nominal Diameter | 8.250 INCHES ALL ENDS IN |
| Flange Face Design | PLAIN ALL ENDS |
| Flow Control Device | DISK |
| Disk Loading Method | WEIGHT |
| Mounting Position | HORIZONTAL |
| Face to Face Distance | 14.875 INCHES IN |
| Nominal Outside Diameter | 9.750 INCHES ALL ENDS IN |
| Material | COPPER ALLOY 903 AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| SS845-2181251ASSY RD 5IN PRIMARY | Naval Sea Systems Command (USA) |
| SS845-2181251ASSY RD 5IN PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 2620-927X9 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| SS845-2181251AS | Naval Sea Systems Command (USA) |
| 2620-927X9 | National Oilwell (USA) |
| SS845-2181251 | Naval Sea Systems Command (USA) |
| SS845-2181251ASSY RD 5IN | National Oilwell (USA) |
NSN 4820-01-063-0053 is a Valve,check, manufactured by Naval Sea Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-063-0053 has 7 cross-referenced part numbers: SS845-2181251ASSY RD 5IN (Naval Sea Systems Command), SS845-2181251ASSY RD 5IN (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 2620-927X9 (Electric Boat Corporation Div General Dynamics Electric Boat), SS845-2181251AS (Naval Sea Systems Command), 2620-927X9 (National Oilwell) and 2 more.
There are 7 known substitutes for 4820-01-063-0053: 4820-00-104-4312, 4820-01-074-0297, 4820-01-105-7514 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for SS845-2181251ASSY RD 5IN: Material Document and Classification: MIL-B-21230 MIL SPEC SINGLE MATERIAL RESPONSE BODY; Valve Operation Method: AUTOMATIC; Bolt Hole Quantity: 12 ALL ENDS; Material Document and Classification: MIL-B-21230 MIL SPEC SINGLE MATERIAL RESPONSE SEAT. 23 total characteristics are documented in the Federal Logistics Information System.