NSN 4820-00-139-7693 D559T8M10, 00-139-7693, 001397693
Product Details | SAFETY RELIEF VALVE
4820-00-139-7693 A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.
Part Alternates: D559T8M10, 4820-00-139-7693, 00-139-7693, 4820001397693, 001397693
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 01 SEP 1971 | 00-139-7693 | 05488 ( VALVE, SAFETY RELIEF ) |
Drawings & Photos | NSN 4820-00-139-7693
Demand History | NSN 4820-00-139-7693
| Part Number | Request Date | QTY | Origin |
|---|---|---|---|
| D559T8M10 | 2025-07-188 | 7 | DIBBS |
| D559T8M10 | 2025-06-177 | 7 | DIBBS |
| D559T8M10 | 2025-03-90 | 6 | DIBBS |
| D559T8M10 | 2024-08-214 | 6 | DIBBS |
| D559T8M10 | 2022-08-223 | 5 | DIBBS |
| D559T8M10 | 2019-12-336 | 7 | DIBBS |
| D559T8M10 | 2019-11-325 | 7 | DIBBS |
| 4820-00-139-7693 | 2015-07-211 | 10 | DIBBS |
| 4820-00-139-7693 | 2014-06-154 | 7 | DIBBS |
| 4820-00-139-7693 | 2012-08-244 | 8 | DIBBS |
| 4820-00-139-7693 | 2012-01-12 | 10 | DIBBS |
| 4820-00-139-7693 | 2011-09-257 | 10 | DIBBS |
| 4820-00-139-7693 | 2011-08-238 | 3 | DIBBS |
| 4820-00-139-7693 | 2010-09-251 | 1 | DIBBS |
Cross Reference | NSN 4820-00-139-7693
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| D559T8M10 | 91816 | CIRCOR AEROSPACE, INC. DBA CIRCLE SEAL CONTROLS |
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Related Products | NSN 4820-00-139-7693
Technical Data | NSN 4820-00-139-7693
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL COMP 303SE BODY STEEL COMP 303SE SEAT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE BODY QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| STYLE DESIGNATOR | C5 STRAIGHT THRU W/BAFFLE |
| FLOW CONTROL DEVICE | POPPET |
| MAXIMUM OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MAXIMUM OPERATING TEMP | 280.0 DEG FAHRENHEIT SINGLE RESPONSE |
| VALVE OPERATION METHOD | AUTOMATIC |
| CONNECTION TYPE | THREADED EXTERNAL PIPE 1ST END |
| CONNECTION STYLE | G46B PLAIN 1ST END |
| THREAD SERIES DESIGNATOR | NPT 1ST END |
| NOMINAL THREAD SIZE | 1.000 INCHES 1ST END |
| THREAD DIRECTION | RIGHT-HAND 1ST END |
| DISK LOADING METHOD | SPRING |
| OPENING PRESSURE SETTING | 10.0 POUNDS PER SQUARE INCH |
| MANUFACTURERS CODE | 91816 |
| DESIGN CONTROL REFERENCE | D559T8M10 |
Restrictions/Controls & Freight Information | NSN 4820-00-139-7693
| 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. |
| Category | Code | Description |
|---|---|---|
| NMF Description | 127220 | PRESSURE REG/RED/RELIEF VALVES NOI |
| Less than car load rating | ||
| Less than truck load rating | P | 77.5 |
| Water commodity Code | 594 | unknown |
| Originating Activity Code | SE | San Antonio Air Logistics Center Kelly AFB, TX 78241-5000 |
| Air Dimension Code | A | Shipment is not a consolidation and does not exceed 72 inches in any dimension. |
| Air Commodity | ||
| Air Special Handling | Z | No special handling required. |
| Special Handling Code | Z | unknonwn |
| HAZMAT | ||
| Type of Cargo | Z | No special type of cargo code applicable |
Management | NSN 4820-00-139-7693
Navy| Category | Code | Description |
|---|---|---|
| Cognizance Codes | 3B | Navy-owned stocks of field level repairable DLA material Naval Inventory Control Point, Mechanicsburg |
| Source of Supply | SMS | Defense Logistics Agency Enterprise Business Systems |
| Agency | DN | Department of the Navy |
| Service Organization | N | U.S. Navy |
| Reparability | D | Field Level Reparables |
| Acquisition Advice Codes | Z | INSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Purchasing | QTY UOM |
1 EA : Each |