SM9

View detailed technical data, stock status, and sourcing information for: SM9
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-166-9183

Item Name Code

20520

Assigment Date

02/07/1973 (53 years ago)

plain (pipe) all ends connection style, automatic valve operation method, right-hand all ends thread direction, 0.171 inches nominal aperture diameter, 160.0 fahrenheit single response maximum operating temp

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Direction: right-hand all ends
Aperture Diameter: 0.171 inches nominal
Maximum Operating Temp: 160.0 fahrenheit single response
Connection Style: plain (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded external pipe all ends
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 125.0 pounds per square inch single response
Nominal Thread Size: 0.500 inches all ends
Material: copper alloy body
Material: rubber synthetic flow control device
Media For Which Designed: water, fresh single response
Surface Treatment: chromium
Style Designator: straight thru
Supplementary Features: flow control device: diaphragm
Thread Series Designator: npt all ends

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
SM9	Restrictor Check Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-00-166-9183?

The FSCG of the NSN 4820-00-166-9183 is 4820

Does the NSN 4820-00-166-9183 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301090

Does NSN 4820-00-166-9183 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 4820-00-166-9183 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-166-9183 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 4820-00-166-9183 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Wed, Feb 7, 1973