NSN 4820-01-640-6689 23942175-1 , 01-640-6689, 239421751
Product Details | PRESSURE AND TEMPERATURE RELIEF VALVE
4820-01-640-6689 A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also VALVE, SAFETY RELIEF and VALVE, REGULATING. TEMPERATURE.
Part Alternates: 23942175-1 , 4820-01-640-6689, 01-640-6689, 4820016406689, 239421751, 016406689
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 2014351 | 01-640-6689 | 16996 ( VALVE, RELIEF, PRESSURE AND TEMPERATURE ) |
Demand History | NSN 4820-01-640-6689
| Part Number | Request Date | QTY | Origin |
|---|---|---|---|
| 23942175-1 | 2024-02-58 | 14 | DIBBS |
| 23942175-1 | 2022-07-209 | 34 | DIBBS |
| 23942175-1 | 2022-06-167 | 11 | DIBBS |
| 23942175-1 | 2021-01-28 | 14 | DIBBS |
| 23942175-1 | 2020-05-142 | 6 | DIBBS |
| 23942175-1 | 2020-03-79 | 4 | DIBBS |
| 23942175-1 | 2019-12-335 | 9 | DIBBS |
| 4820-01-640-6689 | 2018-11-312 | 12 | DIBBS |
| 4820-01-640-6689 | 2017-10-290 | 12 | DIBBS |
| 4820-01-640-6689 | 2017-06-155 | 4 | DIBBS |
| 4820-01-640-6689 | 2017-04-116 | 11 | DIBBS |
| 4820-01-640-6689 | 2017-02-54 | 12 | DIBBS |
| 4820-01-640-6689 | 2016-05-143 | 9 | DIBBS |
| 4820-01-640-6689 | 2016-01-10 | 7 | DIBBS |
| 4820-01-640-6689 | 2016-01-04 | 5 | DIBBS |
| 4820-01-640-6689 | 2015-12-340 | 3 | DIBBS |
| 4820-01-640-6689 | 2015-11-321 | 7 | DIBBS |
| 4820-01-640-6689 | 2015-09-251 | 4 | DIBBS |
| 4820-01-640-6689 | 2015-08-236 | 3 | DIBBS |
| 4820-01-640-6689 | 2015-08-230 | 2 | DIBBS |
| 4820-01-640-6689 | 2015-01-15 | 5 | DIBBS |
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Related Products | NSN 4820-01-640-6689
Technical Data | NSN 4820-01-640-6689
| Characteristic | Specifications |
|---|---|
| BODY STYLE | STRAIGHT THRU |
| BODY OUTSIDE DIAMETER | 1.000 INCHES NOMINAL |
| END CONNECTION QUANTITY | 1 |
| FIRST END THREAD CLASS | 3H |
| FIRST END THREAD SERIES DESIGNATOR | UNJF |
| FIRST END NOMINAL THREAD SIZE | 0.4375 INCHES |
| SECOND END RELATIONSHIP WITH FIRST END | NOT IDENTICAL |
| SECOND END WIDTH ACROSS FLATS | 1.000 INCHES NOMINAL |
| TEMP RATING | 140.0 DEG FAHRENHEIT |
| OPENING PRESSURE SETTING | 4500.0 POUNDS PER SQUARE INCH |
| SPECIAL FEATURES | SERVICE: DRY AIR OR DRY NITROGEN; TEMP. RANGE: M31/P140 DEG F; PRESSURE RATINGS: OPERATING: 3000 PSIG @ 68 DEG F; CRACK: 4500+/- 150 PSIG; RESEAT: 4100 PSIG MIN; PROOF: 5000 PSIG: BURST: 7500 PSIG; RATED FLOW: 0.31 LB/MINUTE AT 5000 PSIG MAX; LEAKAGE: NONE BELOW 4100 PSIG; ACCEPTANCE TEST PER 43942175 |
| III SUPPLEMENTARY FEATURES | ONE INLET; TWO OUTLETS |
| III END ITEM IDENTIFICATION | CH/MH-53; NHA: 65664-03010-011/013 |
Restrictions/Controls & Freight Information | NSN 4820-01-640-6689
| Category | Code | Description |
|---|---|---|
| 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: | Q | Strategic List Item (SLI). Demilitarization not required. SLI are non-MLI(Munitions List Items) controlled by the U.S. Dept. of Commerce through the Export Administration Regulations (EAR) and indicated on the Commerce Control List (CCL). Each CCL entry is preceded by a four-digit Export Control Commerce Control List Item (CCLI) – MUT to the point of scrap required outside the United States. Inside the United States, MUT is required when the DEMIL integrity code (IC) is “3” and MUT is not required when the DEMIL IC is “6.” |
| Electro-static Discharge Susceptible: | A | No known Electrostatic Discharge (ESD) or Electromagnetic Interference (EMI) sensitivity |
| 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 |
|---|---|---|
| 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 | KE | Naval ICP Philadelphia, PA 19111 |
| Air Dimension Code | A | Shipment is not a consolidation and does not exceed 72 inches in any dimension. |
| Air Commodity | V | Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above. |
| Air Special Handling | Z | No special handling required. |
| Special Handling Code | 9 | unknonwn |
| HAZMAT | ||
| Type of Cargo | Z | No special type of cargo code applicable |
Management | NSN 4820-01-640-6689
Navy| Category | Code | Description |
|---|---|---|
| Cognizance Codes | 9B | Navy-owned stocks of 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 |
| 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 |