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NSN 4820-00-289-4346, 4820002894346
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 002894346
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 4820-00-289-4346

National Stock Number (NSN) 4820-00-289-4346, or NIIN 002894346, (valve,safety relief) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). 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: Not established. Not established.

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 4820002894346 does not contain precious metals.

This information was last updated on .


Technical Characteristics

BONNET TYPE
(ADSR) EXPOSED SPRING
MAXIMUM OPERATING TEMP
(AEHZ) 650.0 DEG FAHRENHEIT SINGLE RESPONSE
MATERIAL
(MATT) STEEL BODY
STYLE DESIGNATOR
(STYL) ERR-090
MAXIMUM OPERATING PRESSURE
(CQGM) 150.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
BOLT HOLE NOMINAL DIAMETER
(CWCQ) 0.562 INCHES 1ST END
ADJUSTABLE PRESSURE RANGE
(CQCY) +18.0 TO 32.0 POUNDS PER SQUARE INCH
MEDIA FOR WHICH DESIGNED
(MEDA) STEAM SINGLE RESPONSE
FLOW CONTROL DEVICE
(ADQU) DISK
BONNET ATTACHMENT METHOD
(ADST) BOLTED
BOLT HOLE QUANTITY
(AECS) 4 1ST END
CONNECTION TYPE
(AWLS) FLANGE 1ST END
NOMINAL OUTSIDE DIAMETER
(CWCD) 4.250 INCHES 1ST END
BOLT CIRCLE NOMINAL DIAMETER
(CWCT) 3.125 INCHES 1ST END
RAISED FACE NOMINAL HEIGHT
(CWDH) 0.062 INCHES 1ST END
SECOND CONNECTION FACE TO CENTERLINE DISTANCE
(CWCR) 4.688 INCHES
ADJUSTABLE PRESSURE RANGE
(CQCY) +18.0/+32.0 POUNDS PER SQUARE INCH
FIRST CONNECTION FACE TO CENTERLINE DISTANCE
(CWCL) 3.562 INCHES
VALVE OPERATION METHOD
(AQLR) AUTOMATIC OR MANUAL
STYLE DESIGNATOR
(STYL) ANGLE FLANGED ENDS
FLANGE SHAPE
(ARKN) ROUND WITH HOLES 1ST END
CONNECTION TYPE
(AWLS) FLANGE 2ND END
NOMINAL THICKNESS
(CWCK) 0.500 INCHES 1ST END
DISK LOADING METHOD
(ADSU) SPRING
MAXIMUM OPERATING TEMP
(AEHZ) 650.0 FAHRENHEIT SINGLE RESPONSE
FLANGE FACE DESIGN
(CWDF) RAISED STRAIGHT 1ST END
RAISED FACE NOMINAL DIAMETER
(CWDL) 2.000 INCHES 1ST END
MATERIAL
(MATT) STEEL CORROSION RESISTING FLOW CONTROL DEVICE
MATERIAL
(MATT) STEEL CORROSION RESISTING SEAT
MATERIAL
(MATT) STEEL CORROSION RESISTING STEM

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