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NSN 4820-00-852-5445, 4820008525445
VALVE,RESTRICTOR CHECK

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 008525445
Codification Country
United States
Item Name Code
INC 20520
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 4820-00-852-5445

National Stock Number (NSN) 4820-00-852-5445, or NIIN 008525445, (valve,restrictor check) was assigned November 22, 1966 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. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. 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.

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: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 20520. [A VALVE HAVING AN ORIFICE IN THE POPPET, DISK, OR THE LIKE, TO PERMIT RESTRICTED FLUID FLOW WHEN THE VALVE IS SEATED. IT DOES NOT HAVE A STEM OR PROVISIONS FOR PRESSURE ADJUSTMENTS, AND IS SIMILAR TO A VALVE, CHECK WITH THE EXCEPTION OF THE ORIFICE WHICH PERMITS FLUID FLOW IN MORE THAN ONE DIRECTION.]. 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 4820008525445 contains an unknown precious metal.

This NSN is associated to Schedule B 8481302090: check valves of steel. 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

MAXIMUM OPERATING TEMP
(AEHZ) 71.0 DEG CELSIUS SINGLE RESPONSE
CONNECTION TYPE
(AWLS) THREADED EXTERNAL BOSS 1ST END
CONNECTION STYLE
(AHNC) EXTERNAL SEAT FOR GASKET SEAL (BOSS) 1ST END
DISK LOADING METHOD
(ADSU) SPRING
FLOW CONTROL DEVICE
(ADQU) DISK
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) FED-STD-66, AISI 416 FED STD SINGLE MATERIAL RESPONSE BODY
MATERIAL
(MATT) STEEL COMP 416 BODY
MAXIMUM OPERATING TEMP
(AEHZ) 71.0 CELSIUS SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE
(CQGM) 180.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) HYDRAULIC FLUID, SILICATE-ESTER BASE SINGLE RESPONSE
MOUNTING POSITION
(BBJX) HORIZONTAL OR VERTICAL
NOMINAL THREAD SIZE
(CQJX) 0.438 INCHES ALL ENDS
SEAT ANGLE
(CQRB) 37.0 DEGREES 1ST END
STYLE DESIGNATOR
(STYL) STRAIGHT THRU
THREAD DIRECTION
(AAJF) RIGHT-HAND ALL ENDS
THREAD CLASS
(AAJD) 3A 1ST END
THREAD CLASS
(AAJD) 3B 2ND END
THREAD SERIES DESIGNATOR
(THSD) UNF 2ND END
THREAD SERIES DESIGNATOR
(THSD) UNJ 1ST END
THREAD QUANTITY PER INCH
(CMLP) 20 1ST END
VALVE OPERATION METHOD
(AQLR) AUTOMATIC
UNABLE TO DECODE
(ADSY) UNABLE TO DECODE
VALVE DISCHARGE FLOW RATE
(ADSY) 0.1 CUBIC METERS PER MINUTE

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