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NSN 4820-00-555-0000, 4820005550000
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 005550000
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 4820-00-555-0000

National Stock Number (NSN) 4820-00-555-0000, or NIIN 005550000, (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 are 3 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 3 suppliers 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 unique to one weapons system.

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 May 23, 2008, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The data or the rights to use the data needed to purchase this part from additional sources are not owned by the Government and it has been determined that it is uneconomical to purchase them. Valid AMCs: 1, 2, 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 4820005550000 contains an unknown precious metal.

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

BONNET TYPE
(ADSR) PACKING RETAINING
CONNECTION TYPE
(AWLS) THREADED INTERNAL BOSS ALL ENDS
CONNECTION STYLE
(AHNC) GASKET SEAL(BOSS) ALL ENDS
DISK LOADING METHOD
(ADSU) SPRING
FEATURES PROVIDED
(CBBL) PRESSURE TIGHT OUTLET SIDE
FLOW CONTROL DEVICE
(ADQU) POPPET
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-A-225/6,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIAL
(MATT) ALUMINUM ALLOY 2024 BODY
MATERIAL
(MATT) STEEL CORROSION RESISTING FLOW CONTROL DEVICE
MATERIAL
(MATT) STEEL CORROSION RESISTING SEAT
MAXIMUM OPERATING PRESSURE
(CQGM) 3000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP
(AEHZ) 160.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED
(CWFD) 0.250 INCHES ALL ENDS
NOMINAL THREAD SIZE
(CQJX) 0.437 INCHES ALL ENDS
OPENING PRESSURE SETTING
(CSDC) 1500.0 POUNDS PER SQUARE INCH
STYLE DESIGNATOR
(STYL) STRAIGHT THRU
SURFACE TREATMENT
(SFTT) ANODIZE
THREAD CLASS
(AAJD) 3B ALL ENDS
THREAD DIRECTION
(AAJF) RIGHT-HAND ALL ENDS
THREAD QUANTITY PER INCH
(CMLP) 20 ALL ENDS
THREAD SERIES DESIGNATOR
(THSD) UNJF ALL ENDS
VALVE OPERATION METHOD
(AQLR) AUTOMATIC
VALVE DISCHARGE FLOW RATE
(ADSY) 2.5 GALLONS PER MINUTE
CONNECTION STYLE
(AHNC) G4 GASKET SEAL(BOSS) ALL ENDS
STYLE DESIGNATOR
(STYL) ERR-090
MAXIMUM OPERATING TEMP
(AEHZ) 160.0 DEG FAHRENHEIT SINGLE RESPONSE

Manufacturer Part Numbers

3133451500

RNCC
5
RNVC
2
45414

RNCC
5
RNVC
2
7545956

RNCC
5
RNVC
2
7545956

RNCC
5
RNVC
9
7545956

RNCC
3
RNVC
2

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