Product Details | SAFETY RELIEF VALVE

4820-01-181-5293 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: D559B6M30, D559B-6M-30, 4820-01-181-5293, 01-181-5293, 4820011815293, 011815293

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 11 JUN 1984 01-181-5293

Drawings & Photos | NSN 4820-01-181-5293


Cross Reference | NSN 4820-01-181-5293

Part Number Cage Code Manufacturer
D559B-6M-30 91816 CIRCOR AEROSPACE, INC. DBA CIRCLE SEAL CONTROLS

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Technical Data | NSN 4820-01-181-5293

Characteristic Specifications
MATERIAL COPPER ALLOY BODY
STYLE DESIGNATOR C6 STRAIGHT THRU
FLOW CONTROL DEVICE POPPET
MEDIA FOR WHICH DESIGNED AIR 1ST RESPONSE ACETYLENE 2ND RESPONSE AMMONIA, GASEOUS 3RD RESPONSE REFRIGERANT 12 4TH RESPONSE HYDROGEN 5TH RESPONSE
MAXIMUM OPERATING PRESSURE 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP -40.0 DEG FAHRENHEIT 1ST RESPONSE 250.0 DEG FAHRENHEIT 2ND RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL PIPE ALL ENDS
CONNECTION STYLE G46B PLAIN ALL ENDS
THREAD SERIES DESIGNATOR NPT ALL ENDS
NOMINAL THREAD SIZE 0.750 INCHES ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 30.0 POUNDS PER SQUARE INCH
FURNISHED ITEMS AND QUANTITY 1 DEFLECTOR CAP

Restrictions/Controls & Freight Information | NSN 4820-01-181-5293

Category Code Description
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.
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
Less than truck load rating P 77.5
Water commodity Code 594 unknown
Originating Activity Code 9Z DLIS-K
Battle Creek, MI 49037-3084
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
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