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4820-00-516-3548

Restrictor Check Valve

Find complete technical information, availability, and procurement data for NSN 4820-00-516-3548 All details are based on official government and industry records to support accurate and compliant procurement.

4820-00-516-3548
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-516-3548
Item Name Code
20520
Assigment Date
01/01/1963 (63 years ago)

160.0 fahrenheit single response maximum operating temp, 3a all ends thread class, 0.250 inches nominal aperture diameter, poppet flow control device, right-hand all ends thread direction

Characteristics

Below are the official specifications and performance details for this part, including technical data, material composition, and compliance information.

Thread Class
3a all ends
Thread Direction
right-hand all ends
Aperture Diameter
0.250 inches nominal
Flow Control Device
poppet
Maximum Operating Temp
160.0 fahrenheit single response
Connection Style
flareless all ends
Valve Operation Method
automatic
Connection Type
threaded external tube all ends
Mounting Position
horizontal or vertical
Maximum Operating Pressure
3000.0 pounds per square inch single response
Nominal Thread Size
0.437 inches all ends
Seat Angle
12.0 degrees all ends
Material
aluminum alloy body
Material
rubber packing
Material
steel corrosion resisting flow control device
Media For Which Designed
oil, hydraulic single response
Style Designator
straight thru
Thread Series Designator
unf all ends

Related Parts & Specifications

This NSN includes a range of related parts designed for specific operational needs. Review each item below to find in-depth specifications, functional details, and guidance for correct application and replacement.

Part Number Name
1R3441-2085 Restrictor Check Valve

Classification Data

Detailed NSN information including identification codes, classification data, and key indicators used for cataloging, logistics, and supply management.

Type of Item Identification
K - Full descriptive - reference item identification
Source of Supply
SMS - Defense logistics agency, enterprise business systems
Demilitarization
A - Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Criticality
X - The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Federal Item Identification Guide
A530B0
Precious Metals Indicator
U - Precious metal content is unknown
Pseudo Item Name Code
0020520
Hazardous Material Indicator
N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Schedule B Code
8481309000

Freight Information

Comprehensive freight classifications, shipping codes, and handling specifications for domestic and international transport compliance.

Major Organizational Entity
XX
National Motor Freight Classification Item Number
051080
National Motor Freight Classification Sub-Item Number
Z
Uniform Freight Classification Item Number
29300
National Motor Freight Class Rating
W - Rating variable
Water Commodity
576 - Metal and metal products, nos, (less than 35 feet)
Type of Cargo
Z - No special type of cargo code applicable
Special Hand
9 - Other or no special handling required (sh)
Air Dimension
A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
Air Commodity
BZ -
National Motor Freight Description
faucets,bibcocks,gates valves

FAQs

Get insights on installation procedures, operating conditions, care instructions, industry regulations, and common issues. FAQs below provide key information for 4820-00-516-3548

What is the FSCG of the NSN 4820-00-516-3548?
The FSCG of the NSN 4820-00-516-3548 is 4820
Does the NSN 4820-00-516-3548 have a Schedule B code assigned?
Yes, the Schedule B code is 8481309000
Does NSN 4820-00-516-3548 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 4820-00-516-3548 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-516-3548 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 4820-00-516-3548 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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