The Valve,check, cataloged under National Stock Number 4820-01-377-6963, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is P J Valves Inc. Government technical data includes 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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 | 4820-01-377-6963 |
| Primary Part Number | D5640 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | P J Valves Inc |
| Status | ACTIVE |
| Connection Type | FLANGE ALL ENDS |
| Bolt Circle Nominal Diameter | 7.500 INCHES ALL ENDS IN |
| Raised Face Nominal Height | 0.062 INCHES ALL ENDS IN |
| Material | STEEL COMP 416 SEAT |
| Material | STEEL COMP 420 FLOW CONTROL DEVICE |
| Bolt Hole Quantity | 8 ALL ENDS |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Valve Size | 4.000 INCHES IN |
| Mounting Position | HORIZONTAL |
| Nominal Thickness | 0.938 INCHES ALL ENDS IN |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Operating Pressure | 275.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Bolt Hole Nominal Diameter | 0.750 INCHES ALL ENDS IN |
| Nominal Outside Diameter | 9.000 INCHES ALL ENDS IN |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Face to Face Distance | 11.562 INCHES IN |
| Raised Face Nominal Diameter | 5.312 INCHES ALL ENDS IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Flow Control Device | DISK |
| Material | STEEL UNS J03002 BODY |
| Maximum Operating Temp | 500.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Maximum Operating Temp | 100.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| D5640 | P J Valves Inc (USA) |
NSN 4820-01-377-6963 is a Valve,check, manufactured by P J Valves Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-377-6963 has 1 cross-referenced part number: D5640 (P J Valves Inc).
There are 5 known substitutes for 4820-01-377-6963: 4820-01-377-4006, 4820-01-377-4007, 4820-01-377-4008 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for D5640: Connection Type: FLANGE ALL ENDS; Bolt Circle Nominal Diameter: 7.500 INCHES ALL ENDS IN; Raised Face Nominal Height: 0.062 INCHES ALL ENDS IN; Material: STEEL COMP 416 SEAT. 23 total characteristics are documented in the Federal Logistics Information System.