Product Details | SAFETY RELIEF VALVE

4820-01-142-7823 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: A15514375, A-15514-375, D6611263, D661-1263, 4820-01-142-7823, 01-142-7823, 4820011427823, 011427823

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 20 NOV 1982 01-142-7823

Drawings & Photos | NSN 4820-01-142-7823


Cross Reference | NSN 4820-01-142-7823

Part Number Cage Code Manufacturer
A-15514-375 41947 MUELLER BRASS
D661-1263 96101 GAS EQUIPMENT ENGINEERING CORPORATION, THE

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Technical Data | NSN 4820-01-142-7823

Characteristic Specifications
MATERIAL COPPER ALLOY BODY
STYLE DESIGNATOR A18 STRAIGHT THRU
FLOW CONTROL DEVICE DISK
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL TUBE 1ST END THREADED EXTERNAL PIPE 2ND END
CONNECTION STYLE G42 FLARED 1ST END G46B PLAIN 2ND END
SEAT ANGLE 45.0 DEGREES 1ST END
THREAD SERIES DESIGNATOR UNF 1ST END NPT 2ND END
NOMINAL THREAD SIZE 0.875 INCHES 1ST END 0.500 INCHES 2ND END
THREAD CLASS 2A 1ST END
THREAD DIRECTION RIGHT-HAND 1ST END RIGHT-HAND 2ND END
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 375.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-142-7823

Category Code Description
Shelf-Life Code:0Nondeteriorative
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.
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 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 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 Z unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable