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NSN 4820-00-041-2495, 4820000412495
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 000412495
Codification Country
United States
Item Name Code
INC 05488
Criticality
(X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code
(N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.
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DLMS® Summary

National Stock Number 4820-00-041-2495

National Stock Number (NSN) 4820-00-041-2495, or NIIN 000412495, (valve,safety relief) was assigned November 17, 1972 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are no manufacturer part numbers associated to this NSN.

This part number has not been procured by the US Government in over 5 years.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Aug 02, 2004, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.

This NSN is assigned to Item Name Code (INC) 05488. [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.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820000412495 does not contain precious metals.

This NSN is associated to Schedule B 8481400000: safety or relief valves. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332911: industrial valve manufacturing.

This information was last updated on .


Technical Characteristics

DISK LOADING METHOD
(ADSU) SPRING
ADJUSTABLE PRESSURE RANGE
(CQCY) +46.0 TO 72.0 POUNDS PER SQUARE INCH
BOLT HOLE NOMINAL DIAMETER
(CWCQ) 0.625 INCHES ALL ENDS
BOLT HOLE QUANTITY
(AECS) 4 ALL ENDS
BONNET TYPE
(ADSR) EXPOSED SPRING
BONNET ATTACHMENT METHOD
(ADST) BOLTED
BOLT CIRCLE NOMINAL DIAMETER
(CWCT) 2.625 INCHES ALL ENDS
CONNECTION TYPE
(AWLS) FLANGE ALL ENDS
FLANGE FACE DESIGN
(CWDF) RAISED STRAIGHT ALL ENDS
FLANGE SHAPE
(ARKN) ROUND WITH HOLES ALL ENDS
FLOW CONTROL DEVICE
(ADQU) POPPET
NOMINAL THICKNESS
(CWCK) 0.562 INCHES ALL ENDS
NONDEFINITIVE SPEC/STD DATA
(ZZZT) 2 TYPE AND D COMPOSITION AND 0.500 SIZE
OPENING PRESSURE SETTING
(CSDC) 72.0 POUNDS PER SQUARE INCH
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) ASTMA105,GRADE2 ASSN STD SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) ASTMA105,GRADE2 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) ASTMA105,GRADE2 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) FEDSTD66,AISI416/SAE51416 FED STD SINGLE MATERIAL RESPONSE STEM
MATERIAL
(MATT) STEEL BODY
MATERIAL
(MATT) STEEL COMP 416 STEM
MATERIAL
(MATT) STEEL FLOW CONTROL DEVICE
MATERIAL
(MATT) STEEL SEAT
MAXIMUM OPERATING PRESSURE
(CQGM) 300.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP
(AEHZ) 850.0 DEG FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) STEAM SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER
(CWCD) 3.750 INCHES ALL ENDS
RAISED FACE NOMINAL DIAMETER
(CWDL) 1.375 INCHES ALL ENDS
RAISED FACE NOMINAL HEIGHT
(CWDH) 0.062 INCHES ALL ENDS
TEST DATA DOCUMENT
(TEST) 81349-MIL-S-901 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
VALVE OPERATION METHOD
(AQLR) MANUAL
VALVE DISCHARGE FLOW RATE
(ADSY) 282.0 POUNDS PER HOUR
STYLE DESIGNATOR
(STYL) ANGLE
ADJUSTABLE PRESSURE RANGE
(CQCY) +46.0/+72.0 POUNDS PER SQUARE INCH
STYLE DESIGNATOR
(STYL) ERR-090
STYLE DESIGNATOR
(STYL) C1 ANGLE


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