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NSN 4820-00-202-8260, 4820002028260
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 002028260
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 4820-00-202-8260

National Stock Number (NSN) 4820-00-202-8260, or NIIN 002028260, (valve,safety relief) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There is only one manufacturer part number associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.

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

There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 10, 2014, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.

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 4820002028260 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

STYLE DESIGNATOR
(STYL) ERR-090
ADJUSTABLE PRESSURE RANGE
(CQCY) +558.0/+677.0 POUNDS PER SQUARE INCH
DISK LOADING METHOD
(ADSU) SPRING
ADJUSTABLE PRESSURE RANGE
(CQCY) +558.0 TO 677.0 POUNDS PER SQUARE INCH
BOLT HOLE NOMINAL DIAMETER
(CWCQ) 0.562 INCHES 2ND END
BOLT HOLE NOMINAL DIAMETER
(CWCQ) 0.687 INCHES 1ST END
BOLT HOLE QUANTITY
(AECS) 4 1ST END
BOLT HOLE QUANTITY
(AECS) 4 2ND END
BOLT CIRCLE NOMINAL DIAMETER
(CWCT) 3.125 INCHES 2ND END
BOLT CIRCLE NOMINAL DIAMETER
(CWCT) 3.500 INCHES 1ST END
CONNECTION TYPE
(AWLS) FLANGE 1ST END
CONNECTION TYPE
(AWLS) FLANGE 2ND END
FACE TO FACE DISTANCE
(CWCF) 3.375 INCHES
FEATURES PROVIDED
(CBBL) PRESSURE TIGHT OUTLET SIDE
FIRST CONNECTION FACE TO CENTERLINE DISTANCE
(CWCL) 3.750 INCHES
FLANGE FACE DESIGN
(CWDF) PLAIN 2ND END
FLANGE FACE DESIGN
(CWDF) RAISED STRAIGHT 1ST END
FLANGE SHAPE
(ARKN) ROUND WITH HOLES 1ST END
FLANGE SHAPE
(ARKN) ROUND WITH HOLES 2ND END
FLOW CONTROL DEVICE
(ADQU) POPPET
MAXIMUM OPERATING PRESSURE
(CQGM) 900.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP
(AEHZ) 150.0 DEG FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) WATER-OIL-GAS SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER
(CWCD) 4.250 INCHES 2ND END
NOMINAL OUTSIDE DIAMETER
(CWCD) 4.875 INCHES 1ST END
VALVE OPERATION METHOD
(AQLR) AUTOMATIC
STYLE DESIGNATOR
(STYL) ANGLE

Manufacturer Part Numbers


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