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NSN 4820-00-192-9438, 4820001929438
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 001929438
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 4820-00-192-9438

National Stock Number (NSN) 4820-00-192-9438, or NIIN 001929438, (valve,safety relief) was assigned December 17, 1971 in the Federal Logistics Information System (FLIS). NIIN 001929438 was cancelled on December 15, 2017, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.

There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.

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

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 4820001929438 does not contain precious metals.

This information was last updated on .


Technical Characteristics

DISK LOADING METHOD
(ADSU) SPRING
FLANGE SHAPE
(ARKN) ROUND WITH HOLES 1ST END
FLANGE FACE DESIGN
(CWDF) PLAIN 1ST END
RENEWABLE SEAT RING TYPE
(ADZH) THREADED
BOLT HOLE QUANTITY
(AECS) 4 2ND END
VALVE OPERATION METHOD
(AQLR) AUTOMATIC OR MANUAL
STYLE DESIGNATOR
(STYL) ANGLE
BONNET ATTACHMENT METHOD
(ADST) BOLTED
NOMINAL OUTSIDE DIAMETER
(CWCD) 7.562 INCHES 1ST END
BOLT CIRCLE NOMINAL DIAMETER
(CWCT) 4.875 INCHES 2ND END
SPECIAL FEATURES
(FEAT) THE END CONNECTION IDENTIFIED ABOVE AS THE SECOND END IS THE VALVE INLET
FEATURES PROVIDED
(CBBL) PRESSURE TIGHT OUTLET SIDE
BOLT CIRCLE NOMINAL DIAMETER
(CWCT) 6.000 INCHES 1ST END
FLOW CONTROL DEVICE
(ADQU) DISK
OPENING PRESSURE SETTING
(CSDC) 1375.0 POUNDS PER SQUARE INCH
BOLT HOLE NOMINAL DIAMETER
(CWCQ) 0.812 INCHES 1ST END
STYLE DESIGNATOR
(STYL) ERR-090
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS
(ZZZY) AS DIFFERENTIATED BY THE VALVE DISCHARGE FLOW RATE REQUIREMENT
VALVE DISCHARGE FLOW RATE
(ADSY) 21000.0 POUNDS PER HOUR
CONNECTION TYPE
(AWLS) FLANGE 2ND END
NOMINAL OUTSIDE DIAMETER
(CWCD) 7.000 INCHES 2ND END
ADJUSTABLE PRESSURE RANGE
(CQCY) +1272.0/+1428.0 POUNDS PER SQUARE INCH
BOLT HOLE QUANTITY
(AECS) 8 1ST END
BOLT HOLE NOMINAL DIAMETER
(CWCQ) 1.062 INCHES 2ND END
VALVE OPERATIO
(AQLR) AUTOMATIC OR
FLANGE SHAPE
(ARKN) ROUND WITH HOLES 2ND END
CONNECTION TYPE
(AWLS) FLANGE 1ST END
FLANGE FACE DESIGN
(CWDF) PLAIN 2ND END
BONNET TYPE
(ADSR) EXPOSED SPRING
STYLE DESIGNATOR
(STYL) C1 ANGLE

Manufacturer Part Numbers


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