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NSN 4820-00-451-0570, 4820004510570
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 004510570
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.
Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS® Summary

National Stock Number 4820-00-451-0570

National Stock Number (NSN) 4820-00-451-0570, or NIIN 004510570, (valve,safety relief) was assigned May 17, 1971 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over a year. There have been 18 contracts issued for this part number, with 23 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE7MC24V2519, SPE7MC24V0460, SPE7MC19V9339, SPE7MC19P2776, SPE7MC19V3870. The total value of the awarded contracts has been US$ 968,921.52.

This NSN is somewhat common among different platforms, belonging to 3 different weapons systems.

There has been a small amount of 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 Nov 02, 2005, 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 4820004510570 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

CONNECTION STYLE
(AHNC) G50 EXTERNAL SEAT FOR GASKET SEAL (BOSS) 2ND END
BONNET TYPE
(ADSR) PACKING RETAINING
CONNECTION TYPE
(AWLS) THREADED EXTERNAL BOSS 2ND END
CONNECTION TYPE
(AWLS) THREADED INTERNAL BOSS 1ST END
CONNECTION STYLE
(AHNC) EXTERNAL SEAT FOR GASKET SEAL (BOSS) 2ND END
CONNECTION STYLE
(AHNC) GASKET SEAL(BOSS) 1ST END
DISK LOADING METHOD
(ADSU) SPRING
FEATURES PROVIDED
(CBBL) PRESSURE TIGHT OUTLET SIDE
FLOW CONTROL DEVICE
(ADQU) POPPET
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) AMS 5643 MFR REF 2ND MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-S-764,TYPE 303-CANCELED FED SPEC 1ST MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-S-764,TYPE 303-CANCELED FED SPEC 3RD MATERIAL RESPONSE SEAT
MATERIAL
(MATT) STEEL COMP 303 BODY
MATERIAL
(MATT) STEEL COMP 303 SEAT
MATERIAL
(MATT) STEEL COMP 630 FLOW CONTROL DEVICE
MAXIMUM OPERATING TEMP
(AEHZ) 275.0 FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE
(CQGM) 35.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED
(CWFD) 0.500 INCHES 1ST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED
(CWFD) 0.500 INCHES 2ND END
NOMINAL THREAD SIZE
(CQJX) 0.750 INCHES 1ST END
NOMINAL THREAD SIZE
(CQJX) 0.750 INCHES 2ND END
OPENING PRESSURE SETTING
(CSDC) 48.0 POUNDS PER SQUARE INCH
SPECIAL FEATURES
(FEAT) SECOND END DESCRIPTION IS INLET
THREAD DIRECTION
(AAJF) RIGHT-HAND 1ST END
THREAD DIRECTION
(AAJF) RIGHT-HAND 2ND END
THREAD CLASS
(AAJD) 3A 2ND END
THREAD CLASS
(AAJD) 3B 1ST END
THREAD SERIES DESIGNATOR
(THSD) UNF 2ND END
THREAD SERIES DESIGNATOR
(THSD) UNJF 1ST END
THREAD QUANTITY PER INCH
(CMLP) 16 1ST END
THREAD QUANTITY PER INCH
(CMLP) 16 2ND END
VALVE DISCHARGE FLOW RATE
(ADSY) 6.0 GALLONS PER MINUTE
VALVE OPERATION METHOD
(AQLR) AUTOMATIC
STYLE DESIGNATOR
(STYL) ERR-090
MAXIMUM OPERATING TEMP
(AEHZ) 275.0 DEG FAHRENHEIT SINGLE RESPONSE
CONNECTION STYLE
(AHNC) G4 GASKET SEAL(BOSS) 1ST END

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