NSN 4820-01-495-5307 MILV22459, MIL-V-22459, 20206
Product Details | SAFETY RELIEF VALVE
4820-01-495-5307 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: MILV22459, MIL-V-22459, 20206, 20206L51M, 4820-01-495-5307, 01-495-5307, 4820014955307, 014955307
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 19 MAR 2002 | 01-495-5307 | 05488 ( VALVE, SAFETY RELIEF ) |
Drawings & Photos | NSN 4820-01-495-5307
Demand History | NSN 4820-01-495-5307
| Part Number | Request Date | QTY | Origin |
|---|---|---|---|
| 20206L51M | 2025-08-229 | 3 | DIBBS |
| 20206L51M | 2025-08-216 | 3 | DIBBS |
| 20206L51M | 2023-03-74 | 3 | DIBBS |
| 20206L51M | 2022-10-290 | 3 | DIBBS |
| 20206L51M | 2022-10-279 | 3 | DIBBS |
Cross Reference | NSN 4820-01-495-5307
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 20206 | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| 20206L51M | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| 20206L51M | 15187 | PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM |
| MIL-V-22459 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY |
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Related Products | NSN 4820-01-495-5307
Technical Data | NSN 4820-01-495-5307
| Characteristic | Specifications |
|---|---|
| MATERIAL | COPPER ALLOY 922 BODY NICKEL ALLOY FLOW CONTROL DEVICE NICKEL ALLOY SEAT NICKEL ALLOY STEM |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM B-61 ASSN STD SINGLE MATERIAL RESPONSE BODY QQ-N-281 FED SPEC 1ST MATERIAL RESPONSE AND AMS 3660 ASSN STD 2ND MATERIAL RESPONSE FLOW CONTROL DEVICE QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SEAT QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| STYLE DESIGNATOR | C1 ANGLE |
| FLOW CONTROL DEVICE | DISK |
| MAXIMUM OPERATING PRESSURE | 1500.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MAXIMUM OPERATING TEMP | 165.0 DEG FAHRENHEIT SINGLE RESPONSE |
| VALVE OPERATION METHOD | AUTOMATIC |
| CONNECTION TYPE | UNTHREADED INTERNAL PIPE ALL ENDS |
| CONNECTION STYLE | G20B SOCKET ALL ENDS |
| NOMINAL PIPE SIZE ACCOMMODATED | 1.000 INCHES ALL ENDS |
| RENEWABLE SEAT RING TYPE | PRESSED-IN |
| BONNET TYPE | INSIDE SPRING |
| BONNET ATTACHMENT METHOD | BOLTED |
| DISK LOADING METHOD | SPRING |
| ADJUSTABLE PRESSURE RANGE | 76.0 TO 90.0 POUNDS PER SQUARE INCH |
| FURNISHED ITEMS AND QUANTITY | 2 TAILPIECE AND 2 NUT AND 1 PLUGGED DRAIN AND 1 RELIEF PLUG |
| SPECIAL FEATURES | FOR GAS SERVICE; VENT MUST BE OPEN TO ATMOSPHERE OR PIPED TO DOWNSTREAM PIPING; VENT PLUG (FIND NO. 27) AND ASSOCIATED O-RING (FIND NO. 28) ARE NOT TO BE INSTALLED WHEN VALVE IS USED IN AN AIR SYSTEM; HAS MONEL TRIM |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | 1" RELIEF VALVE TYPE 1751T |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-V-22459 |
Restrictions/Controls & Freight Information | NSN 4820-01-495-5307
| 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 |
|---|---|---|
| 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 | AX | Defense Supply Center Columbus Columbus, OH 43216-5000 |
| 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 4820-01-495-5307
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 | J | NOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Purchasing | QTY UOM |
1 EA : Each |