Product Details | SAFETY RELIEF VALVE

4820-00-871-7391 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: MILV20065, 213569, 4820-00-871-7391, 00-871-7391, 4820008717391, 008717391

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 08 NOV 1967 00-871-7391

Drawings & Photos | NSN 4820-00-871-7391


Cross Reference | NSN 4820-00-871-7391

Part Number Cage Code Manufacturer
213569 16497 DRESSER, INC. DBA DRESSER EQUIPMENT GROUP
MILV20065 81349 MILITARY SPECIFICATIONS PROMULGATED BY MILITARY

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Technical Data | NSN 4820-00-871-7391

Characteristic Specifications
MATERIAL COPPER ALLOY 922 BODY NICKEL ALLOY FLOW CONTROL DEVICE NICKEL ALLOY SEAT NICKEL ALLOY STEM
MATERIAL DOCUMENT AND CLASSIFICATION QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE BODY
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED AIR SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 3600.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
VALVE OPERATION METHOD MANUAL
CONNECTION TYPE UNTHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE G30B SOCKET WITH BRAZING RING ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED 0.500 INCHES ALL ENDS
RENEWABLE SEAT RING TYPE THREADED
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD THREADED
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 2301.0 TO 3600.0 POUNDS PER SQUARE INCH
FURNISHED ITEMS AND QUANTITY 2 NUT
FEATURES PROVIDED PRESSURE TIGHT OUTLET SIDE
NONDEFINITIVE SPEC/STD DATA A1 TYPE AND C CLASS
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS AS DIFFERENTIATED BY PAC CQCY
MANUFACTURERS CODE 81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE MILV20065
MANUFACTURERS CODE 16497
DESIGN CONTROL REFERENCE 213569

Restrictions/Controls & Freight Information | NSN 4820-00-871-7391

Category Code Description
Shelf-Life Code:960 months
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem 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:0Represents 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 P 77.5
Less than truck load rating P 77.5
Water commodity Code 594 unknown
Originating Activity Code HD Naval Inventory Control Point
Mechanicsburg, PA 17055-0788
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 4820-00-871-7391

Category Code Description
Cognizance Codes1HConsumable material assigned to NAVICP MECH for inventory management
Naval Inventory Control Point, Mechanicsburg
Source of SupplyN35Naval Inventory Control Point
Mechanicsburg, PA 17055-0788
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
ReparabilityDField Level Reparables
Acquisition Advice CodesVTERMINAL ITEM # Identifies items in stock, but future procurement is not authorized. Requisitions may continue to be submitted until stocks are exhausted. Preferred item National Stock Number is normally provided by application of the phrase: When Exhausted Use (NSN). Requisitions will be submitted in accordance with IMM/Service requisitioning procedures as applicable.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code960 months
Purchasing QTY
UOM
1
EA : Each