Product Details | SAFETY RELIEF VALVE

4820-01-504-9945 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: CDS 17035, CDS17035, SW136, SW136A01E0060/17035, SW136A01E0060/17035CP, SW136A01E006017035, SW136A01E006017035CP, 4820-01-504-9945, 01-504-9945, 4820015049945, 015049945

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 18 FEB 2003 01-504-9945

Drawings & Photos | NSN 4820-01-504-9945


Demand History | NSN 4820-01-504-9945

Part Number Request Date QTY Origin
4820-01-504-9945 2026-01-26 1 DIBBS
4820-01-504-9945 2024-09-266 2 DIBBS
4820-01-504-9945 2024-08-241 1 DIBBS
4820-01-504-9945 2024-07-211 1 DIBBS
4820-01-504-9945 2023-11-305 1 DIBBS

Cross Reference | NSN 4820-01-504-9945

Part Number Cage Code Manufacturer
CDS 17035 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM
SW136 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM
SW136A01E0060/17035 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM
SW136A01E0060/17035CP 03950 NAVAL INVENTORY CONTROL POINT MECHANICSBURG

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Technical Data | NSN 4820-01-504-9945

Characteristic Specifications
MATERIAL STEEL BODY NICKEL ALLOY FLOW CONTROL DEVICE STEEL SEAT STEEL STEM
MATERIAL DOCUMENT AND CLASSIFICATION ASTM A351 GR. CF8M ASSN STD SINGLE MATERIAL RESPONSE BODY QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE ASTM A582 TY. 303 ASSN STD SINGLE MATERIAL RESPONSE SEAT ASTM A582 TY. 303 ASSN STD SINGLE MATERIAL RESPONSE STEM
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED NITROGEN, LIQUID SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 125.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE DISCHARGE FLOW RATE 16.0 CUBIC FEET PER MINUTE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE UNTHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE G20B SOCKET ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED 0.500 INCHES ALL ENDS
RENEWABLE SEAT RING TYPE THREADED
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD BOLTED
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 60.0 POUNDS PER SQUARE INCH
ADJUSTABLE PRESSURE RANGE 60.0 TO 73.0 POUNDS PER SQUARE INCH
FURNISHED ITEMS AND QUANTITY 2 NUT AND 2 TAILPIECE
SPECIFICATION/STANDARD DATA 81349-MIL-V-22549 (1), DTD 13 APR 77, MODIFIED GOVERNMENT SPECIFICATION
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS OXYGEN CLEANING REQUIRED IAW MIL-STD-1330
CRITICALITY CODE JUSTIFICATION ZZZY
III END ITEM IDENTIFICATION VIRGINIA CLASS SUB
III PART NAME ASSIGNED BY CONTROLLING AGENCY 1/2 IN. RELIEF VALVE TYPE 2571-T
MANUFACTURERS CODE 15187
DESIGN CONTROL REFERENCE SW136A01E0060/17035

Restrictions/Controls & Freight Information | NSN 4820-01-504-9945

Category Code Description
Shelf-Life Code:U96 months
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:SThe item is a non-aviation Critical Safety Item (CSI) whose failure will result in serious damage to equipment or serious injury or death to personnel.
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
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 4820-01-504-9945

Category Code Description
Cognizance Codes3BNavy-owned stocks of field level repairable DLA material
Naval Inventory Control Point, Mechanicsburg
Special Material IDCPAn item that requires special cleaning and packaging for oxygen/nitrogen service (e.g, valves, piping systems, generators).
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
ReparabilityDField Level Reparables
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 CodeU96 months
Purchasing QTY
UOM
1
EA : Each