NSN 4820-00-781-7820 MILV22094, 29973, 3657U
Product Details | STOP-LIFT-CHECK VALVE
4820-00-781-7820 A valve with a stem that may be mechanically actuated to three different positions by rotary or linear motion. In the first position, the valve disk is located and locked against the seat permitting no fluid flow through the valve. In the second position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. In the third position, the valve disk is lifted from the seat to allow a flow of fluid in either direction through the valve. The valve disk may be spring loaded. See also VALVE, LIFT-CHECK and VALVE, STOP-CHECK.20248100015Valves, Powered48200018Valves, Nonpowered
Part Alternates: MILV22094, 29973, 3657U, 4820-00-781-7820, 00-781-7820, 4820007817820, 007817820
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 01 JAN 1960 | 00-781-7820 | 27829 ( VALVE, STOP-LIFT-CHECK ) |
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Technical Data | NSN 4820-00-781-7820
| Characteristic | Specifications |
|---|---|
| MATERIAL | COBALT ALLOY FLOW CONTROL DEVICE STEEL COMP 410 STEM |
| STYLE DESIGNATOR | E7A ANGLE FLANGED ENDS |
| VALVE SIZE | 1.000 INCHES |
| FIRST CONNECTION FACE TO CENTERLINE DISTANCE | 4.250 INCHES |
| SECOND CONNECTION FACE TO CENTERLINE DISTANCE | 4.250 INCHES |
| FLOW CONTROL DEVICE | DISK |
| VALVE OPERATION METHOD | MANUAL |
| CONNECTION TYPE | FLANGE 1ST END |
| FLANGE SHAPE | ROUND WITH HOLES 1ST END |
| NOMINAL OUTSIDE DIAMETER | 4.875 INCHES 1ST END |
| NOMINAL THICKNESS | 0.688 INCHES 1ST END |
| BOLT HOLE QUANTITY | 4 1ST END |
| BOLT HOLE NOMINAL DIAMETER | 0.750 INCHES 1ST END |
| BOLT CIRCLE NOMINAL DIAMETER | 3.500 INCHES 1ST END |
| FLANGE FACE DESIGN | RAISED STRAIGHT 1ST END |
| RAISED FACE NOMINAL HEIGHT | 0.250 INCHES 1ST END |
| RAISED FACE NOMINAL DIAMETER | 2.000 INCHES 1ST END |
| MOUNTING POSITION | VERTICAL |
| RENEWABLE SEAT RING TYPE | THREADED |
| BONNET TYPE | OUTSIDE SCREW-YOKE |
| BONNET ATTACHMENT METHOD | BOLTED |
| FEATURES PROVIDED | BONNET PACKING |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MILV22094 |
Restrictions/Controls & Freight Information | NSN 4820-00-781-7820
| Category | Code | Description |
|---|---|---|
| Shelf-Life Code: | 0 | Nondeteriorative |
| Hazardous Material Indicator Code | N | There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials |
| Demilitarization Code: | A | Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required. |
| Controlled Inventory Item Code: | U | UNCLASSIFIED |
| Precious Metals Indicator Code: | A | Item does not contain precious metal |
| Criticality Code: | X | The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. |
| Automatic Data Processing Equipment: | 0 | Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9) |
| Category | Code | Description |
|---|---|---|
| No Freight Information | ||
Management | NSN 4820-00-781-7820
| Category | Code | Description |
|---|---|---|
| Cognizance Codes | 7H | Depot level reparable shipboard and base equipment, assemblies, components and repair parts related to Naval Sea Systems Command equipment Naval Inventory Control Point, Mechanicsburg |
| Special Material Content | 9 | Non-Hazardous or Non-Sensitive Item, does not require hazardous or special handling, packaging or precautions |
| Source of Supply | NRP | NAVICP-ERP 700 Robbins Avenue Philadelphia, PA 19111-5098 |
| Agency | DN | Department of the Navy |
| Service Organization | L | Lead Service - 22 (Repairable) |
| Reparability | H | Depot Level Reparable |
| Acquisition Advice Codes | P | RESTRICTED REQUISITION - SECURITY ASSISTANCE PROGRAM (SAP) 1. Indicates item is stocked or acquired only for SAP (replaces Military Assistance Program (MAP)) requirements, or 2. Indicates item is nonstocked and materiel is ordered from the contractor for shipment directly to the foreign government. 3. Base, post, camp, or station will not requisition. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |



