Product Details | SAFETY RELIEF VALVE

4820-01-172-2962 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: 202532, 20253-2, 20253-201141M AND 16239, 20253201141MAND16239, 4820-01-172-2962, 01-172-2962, 4820011722962, 011722962

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 18 FEB 1984 01-172-2962

Drawings & Photos | NSN 4820-01-172-2962


Cross Reference | NSN 4820-01-172-2962

Part Number Cage Code Manufacturer
20253-2 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
20253-201141M AND 16239 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
20253-201141M AND 16239 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM

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Technical Data | NSN 4820-01-172-2962

Characteristic Specifications
MATERIAL COPPER ALLOY BODY NICKEL ALLOY STEM
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE DISK
MAXIMUM OPERATING PRESSURE 400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE UNTHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE G30B SOCKET WITH BRAZING RING ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED 2.000 INCHES ALL ENDS
BONNET TYPE INSIDE SCREW
BONNET ATTACHMENT METHOD INTEGRAL
ADJUSTABLE PRESSURE RANGE 55.0 TO 68.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-172-2962

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
Less than truck load rating P 77.5
Water commodity Code 594 unknown
Originating Activity Code AX Defense Supply Center Columbus
Columbus, OH 43216-5000
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 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 4820-01-172-2962

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