Product Details | PRESSURE AND TEMPERATURE RELIEF VALVE

4820-00-451-0263 A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also VALVE, SAFETY RELIEF and VALVE, REGULATING. TEMPERATURE.

Part Alternates: A44XL, 100XL-4 125PSI, 100XL4125PSI, 1775310, 17753-10, 1840229, 18-402-29, 44XL, 4820-00-451-0263, 00-451-0263, 4820004510263, 004510263

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 19 DEC 1969 00-451-0263

Drawings & Photos | NSN 4820-00-451-0263


Demand History | NSN 4820-00-451-0263

Part Number Request Date QTY Origin
100XL-4 125PSI 2020-02-42 1 DIBBS
18C-402-29 2020-02-42 1 DIBBS
4820-00-451-0263 2017-05-136 1 DIBBS
4820-00-451-0263 2016-08-231 2 DIBBS
4820-00-451-0263 2013-07-203 1 DIBBS
4820-00-451-0263 2013-07-188 1 DIBBS
4820-00-451-0263 2013-07-186 1 DIBBS
4820-00-451-0263 2013-06-179 1 DIBBS
4820-00-451-0263 2013-06-171 1 DIBBS
4820-00-451-0263 2013-06-164 1 DIBBS
4820-00-451-0263 2011-10-283 1 DIBBS

Cross Reference | NSN 4820-00-451-0263

Part Number Cage Code Manufacturer
100XL-4 125PSI 79227 WATTS REGULATOR CO
17753-10 19857 ELECTRIC HEATER COMPANY, THE DBA HUBBELL-ELECTRIC HEATER CO
18-402-29 72219 CONBRACO INDUSTRIES INC
44XL 79227 WATTS REGULATOR CO
A44XL 79227 WATTS REGULATOR CO

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Technical Data | NSN 4820-00-451-0263

Characteristic Specifications
BODY STYLE A7 ANGLE
BODY MATERIAL BRONZE
FLOW CONTROL DEVICE DISK, FLAT
END CONNECTION QUANTITY 2
FIRST END CONNECTION TYPE THREADED INTERNAL PIPE
FIRST END STYLE DESIGNATOR G11 PLAIN
FIRST END NOMINAL PIPE SIZE ACCOMMODATED 0.750 INCHES
FIRST END THREAD CLASS 3B
FIRST END THREAD DIRECTION RIGHT-HAND
FIRST END THREAD SERIES DESIGNATOR NPT
FIRST END NOMINAL THREAD SIZE 0.750 INCHES
SECOND END RELATIONSHIP WITH FIRST END NOT IDENTICAL
SECOND END CONNECTION TYPE THREADED EXTERNAL PIPE
SECOND END STYLE DESIGNATOR J6 PLAIN
SECOND END NOMINAL PIPE SIZE ACCOMMODATED 0.750 INCHES
SECOND END THREAD CLASS 3A
SECOND END THREAD DIRECTION RIGHT-HAND
SECOND END THREAD SERIES DESIGNATOR NPT
SECOND END NOMINAL THREAD SIZE 0.750 INCHES
TEMP ADJUSTABILITY NOT ADJUSTABLE
MEDIA FOR WHICH DESIGNED WATER, FRESH
TEMP RATING 210.0 DEG FAHRENHEIT
VALVE DISCHARGE FLOW RATE NOT RATED
TEMP CONTROL DEVICE TYPE THERMOSTATIC
ADJUSTABLE PRESSURE RANGE 75.0 TO 150.0 POUNDS PER SQUARE INCH
FURNISHED ITEMS TEMPERATURE GAGE AND TEST ATTACHMENT

Restrictions/Controls & Freight Information | NSN 4820-00-451-0263

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 SE San Antonio Air Logistics Center
Kelly AFB, TX 78241-5000
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 4820-00-451-0263

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 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
Purchasing QTY
UOM
1
EA : Each