Product Details | PRESSURE AND TEMPERATURE RELIEF VALVE

4820-01-287-0422 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: 40XL7, 40XL-7, 40XL-7 1IN, 40XL-7 1IN-125PSI, 40XL71IN, 40XL71IN125PSI, 4820-01-287-0422, 01-287-0422, 4820012870422, 012870422

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 13 OCT 1988 01-287-0422

Drawings & Photos | NSN 4820-01-287-0422


Demand History | NSN 4820-01-287-0422

Part Number Request Date QTY Origin
40XL-7 1IN-125PSI 2023-04-96 19 DIBBS
40XL-7 1IN-125PSI 2022-08-230 13 DIBBS
4820-01-287-0422 2018-05-144 14 DIBBS
4820-01-287-0422 2016-09-262 16 DIBBS
4820-01-287-0422 2013-10-294 18 DIBBS
4820-01-287-0422 2012-08-223 3 DIBBS
4820-01-287-0422 2012-03-68 3 DIBBS
4820-01-287-0422 2011-05-143 1 DIBBS
4820-01-287-0422 2011-05-124 2 DIBBS

Cross Reference | NSN 4820-01-287-0422

Part Number Cage Code Manufacturer
40XL-7 79227 WATTS REGULATOR CO
40XL-7 1IN 19857 ELECTRIC HEATER COMPANY, THE DBA HUBBELL-ELECTRIC HEATER CO
40XL-7 1IN-125PSI 19857 ELECTRIC HEATER COMPANY, THE DBA HUBBELL-ELECTRIC HEATER CO
40XL-7 1IN-125PSI 79227 WATTS REGULATOR CO

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Technical Data | NSN 4820-01-287-0422

Characteristic Specifications
BODY STYLE A7 ANGLE
BODY MATERIAL BRONZE
STEM MATERIAL PLASTIC
END CONNECTION QUANTITY 2
FIRST END CONNECTION TYPE THREADED INTERNAL PIPE
FIRST END NOMINAL PIPE SIZE ACCOMMODATED 1.000 INCHES
FIRST END THREAD DIRECTION RIGHT-HAND
SECOND END RELATIONSHIP WITH FIRST END NOT IDENTICAL
SECOND END CONNECTION TYPE THREADED EXTERNAL PIPE
SECOND END NOMINAL PIPE SIZE ACCOMMODATED 1.000 INCHES
SECOND END THREAD DIRECTION RIGHT-HAND
MEDIA FOR WHICH DESIGNED WATER, FRESH
TEMP RATING 210.0 DEG FAHRENHEIT
OPENING PRESSURE SETTING 125.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-287-0422

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 4820-01-287-0422

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 CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each