Product Details | SAFETY RELIEF VALVE

4820-01-391-9797 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: A-49151 AND CDS H-50488, A49151ANDCDSH50488, 49151, 4820-01-391-9797, 01-391-9797, 4820013919797, 013919797

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 21 JUN 1994 01-391-9797

Drawings & Photos | NSN 4820-01-391-9797


Cross Reference | NSN 4820-01-391-9797

Part Number Cage Code Manufacturer
49151 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM
A-49151 AND CDS H-50488 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM

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Technical Data | NSN 4820-01-391-9797

Characteristic Specifications
MATERIAL STEEL BODY STEEL COMP 304 FLOW CONTROL DEVICE STEEL STEM
MATERIAL DOCUMENT AND CLASSIFICATION ASTM A216 ASSN STD SINGLE MATERIAL RESPONSE BODY AISI 304 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE ASTM A53 ASSN STD SINGLE MATERIAL RESPONSE STEM
STYLE DESIGNATOR A7A ANGLE FLANGED ENDS
FLOW CONTROL DEVICE DISK
MAXIMUM OPERATING PRESSURE 725.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
VALVE DISCHARGE FLOW RATE 44700.0 POUNDS PER HOUR
VALVE OPERATION METHOD MANUAL
CONNECTION TYPE FLANGE 1ST END FLANGE 2ND END
FLANGE SHAPE ROUND WITH HOLES 1ST END ROUND WITH HOLES 2ND END
NOMINAL OUTSIDE DIAMETER 9.000 INCHES 1ST END 7.500 INCHES 2ND END
NOMINAL THICKNESS 1.125 INCHES 1ST END
BOLT HOLE QUANTITY 8 1ST END 8 2ND END
BOLT HOLE NOMINAL DIAMETER 0.875 INCHES 1ST END 0.875 INCHES 2ND END
BOLT CIRCLE NOMINAL DIAMETER 7.250 INCHES 1ST END 5.875 INCHES 2ND END
FLANGE FACE DESIGN RAISED STRAIGHT 1ST END RAISED STRAIGHT 2ND END
RAISED FACE NOMINAL HEIGHT 0.062 INCHES 1ST END
RAISED FACE NOMINAL DIAMETER 5.500 INCHES 1ST END 4.125 INCHES 2ND END
OPENING PRESSURE SETTING 625.0 POUNDS PER SQUARE INCH
ADJUSTABLE PRESSURE RANGE 696.0 TO 760.0 POUNDS PER SQUARE INCH
FURNISHED ITEMS AND QUANTITY 1 LEVER
SPECIAL FEATURES MOD2 2-1/2J X 3-1/2HNJ

Restrictions/Controls & Freight Information | NSN 4820-01-391-9797

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.
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 4820-01-391-9797

Category Code Description
Cognizance Codes7HDepot level reparable shipboard and base equipment, assemblies, components and repair parts related to Naval Sea Systems Command equipment
Naval Inventory Control Point, Mechanicsburg
Special Material Content9 Non-Hazardous or Non-Sensitive Item, does not require hazardous or special handling, packaging or precautions
Source of SupplyNRPNAVICP-ERP
700 Robbins Avenue
Philadelphia, PA 19111-5098
AgencyDNDepartment of the Navy
Service OrganizationLLead Service - 22 (Repairable)
ReparabilityHDepot Level Reparable
Acquisition Advice CodesJNOT 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 CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative