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NSN 4820-01-477-9754, 4820014779754
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 014779754
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 4820-01-477-9754

National Stock Number (NSN) 4820-01-477-9754, or NIIN 014779754, (valve,safety relief) was assigned August 25, 2000 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 4 manufacturer part numbers associated with this NSN. 2 of those 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, 2 suppliers are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Sep 29, 2015. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPE7M015M5623, SPE7M015M5623. The total value of the awarded contracts has been US$ 28,570.00.

This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.

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 Aug 21, 2015, 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 4820014779754 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

BONNET ATTACHMENT METHOD
(ADST) BOLTED
BONNET TYPE
(ADSR) INSIDE SPRING
CONNECTION STYLE
(AHNC) PLAIN (TUBE) ALL ENDS
CONNECTION TYPE
(AWLS) THREADED EXTERNAL PIPE ALL ENDS
DISK LOADING METHOD
(ADSU) SPRING
FURNISHED ITEMS AND QUANTITY
(TMQY) 1 CAP AND 1 LOCKING DEVICE
FLOW CONTROL DEVICE
(ADQU) DISK
OPENING PRESSURE SETTING
(CSDC) 100.0 POUNDS PER SQUARE INCH
PART NAME ASSIGNED BY CONTROLLING AGENCY
(CXCY) 1/2" RELIEF VALVE TYP 1551-T
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) ASTMB-61 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-N-281 OR ASTM B164 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-N-281 OR ASTM B164 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-N-281 OR ASTM B164 FED SPEC SINGLE MATERIAL RESPONSE STEM
MATERIAL
(MATT) COPPER ALLOY 922 BODY
MATERIAL
(MATT) NICKEL ALLOY R-405 FLOW CONTROL DEVICE
MATERIAL
(MATT) NICKEL ALLOY R-405 SEAT
MATERIAL
(MATT) NICKEL ALLOY R-405 STEM
MAXIMUM OPERATING PRESSURE
(CQGM) 400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP
(AEHZ) 165.0 DEG FAHRENHEIT SINGLE RESPONSE
RENEWABLE SEAT RING TYPE
(ADZH) PRESSED-IN
SPECIAL FEATURES
(FEAT) SPRING MATERIAL IS STAINLESS STEEL; VENT MUST BE OPEN TO ATMOSPHERE OR PIPED TO DOWNSTREAM PIPING
VALVE OPERATION METHOD
(AQLR) AUTOMATIC
STYLE DESIGNATOR
(STYL) ANGLE
CONNECTION STYLE
(AHNC) G46A PLAIN (TUBE) ALL ENDS
STYLE DESIGNATOR
(STYL) ERR-090


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