Product Details | SAFETY RELIEF VALVE

4820-00-027-0994 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: 48A, 4820-00-027-0994, 00-027-0994, 4820000270994, 000270994

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1963 00-027-0994

Drawings & Photos | NSN 4820-00-027-0994


Cross Reference | NSN 4820-00-027-0994

Part Number Cage Code Manufacturer
48A 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY

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Technical Data | NSN 4820-00-027-0994

Characteristic Specifications
MATERIAL COPPER ALLOY OVERALL
STYLE DESIGNATOR C3 ANGLE
FLOW CONTROL DEVICE POPPET
MEDIA FOR WHICH DESIGNED AIR 1ST RESPONSE GAS, NATURAL 2ND RESPONSE
MAXIMUM OPERATING PRESSURE 225.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 300.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD MANUAL
CONNECTION TYPE THREADED EXTERNAL PIPE 1ST END
CONNECTION STYLE G46B PLAIN 1ST END
NOMINAL PIPE SIZE ACCOMMODATED 0.500 INCHES 1ST END
THREAD SERIES DESIGNATOR NPT 1ST END
NOMINAL THREAD SIZE 0.500 INCHES 1ST END
THREAD DIRECTION RIGHT-HAND 1ST END
BONNET TYPE INSIDE SCREW
BONNET ATTACHMENT METHOD THREADED
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 50.0 POUNDS PER SQUARE INCH
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS AS DIFFERENTIATED BY OPENING PRESSURE SETTING AND END SIZE
MANUFACTURERS CODE 01343
DESIGN CONTROL REFERENCE 48A

Restrictions/Controls & Freight Information | NSN 4820-00-027-0994

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:UPrecious metal type is unknown
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 576 unknown
Originating Activity Code XX
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

Management | NSN 4820-00-027-0994

Category Code Description
Materiel Category and Inventory ManagerJ Ground Forces Support Materiel (DLA/GSA Items)
Appropriation and Budget Activity2 Stock Fund Secondary Items
Management Inventory Segment1 REPARABLE ITEMS (Exclusive of Insurance and Provisioning Items.) This code will be used to identify serviceable or unserviceable items of a durable nature which when unserviceable normally can be repaired economically by depots or lower echelons of maintenance.
Specific Group/Generic Code0 Medical Materiel
Weapons Systems/End Item or Homogeneous Group00DLA/GSA-Managed Items that cannot be identified to a specific Army Weapons Systems/End Item
Accounting Requirements CodeX Expendable item. An item of Army property coded with an ARC of ?X? in the AMDF. Expendable items require no formal accountability after issue from a stock record account. Commercial and fabricated items similar to items coded ?X? in the AMDF are considered expendable items.
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDADepartment of the Army
Service OrganizationAU.S. Army
ReparabilityOIf condemned or economically unserviceable, dispose at organizational level.
Acquisition Advice CodesXSEMIACTIVE ITEM-NO REPLACEMENT (NON-STOCKED ITEMS) A potentially inactive NSN which must be retained in the supply system as an item of supply because (1) stocks of the item are on hand or in use below the wholesale level and (2) the NSN is cited in equipment authorization documents TO & E, TA, TM, etc., or in-use assets are being reported. 1. Items are authorized for central procurement but not authorized for stockage at wholesale level. 2. Requisitions for in-use replacement will be authorized in accordance with individual Military Service directives. 3. Requisitions may be submitted as requirements generate. Repetitive demands may dictate an AAC change to permit wholesale stockage.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each
Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
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 Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each