C20SS1-4IN

View detailed technical data, stock status, and sourcing information for: C20SS1-4IN
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-455-5565

Item Name Code

05487

Assigment Date

04/25/1969 (57 years ago)

A flexible, tubular item of light wall construction. It must have single or multiple layers of nonmetallic material, but may contain metal wire reinforcement, foil type liner, and/or woven or braided cover. It is designed to convey under low pressure gaseous material, such as air and fumes, and light weight solid materials, such as dust, powders, and fibers. For items with couplings, see hose assembly, air duct. For items of sleeve section design rated for high pressure use, see sleeve, seal, coupling. Excludes:hose, nonmetallic.

ball flow control device, spring disk loading method, automatic valve operation method, plain, optional end (pipe) all ends connection style, right-hand all ends thread direction

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
Flow Control Device: ball
Disk Loading Method: spring
Connection Style: plain, optional end (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Mounting Position: horizontal or vertical
Nominal Thread Size: 0.250 inches all ends
Material: steel corrosion resisting overall
Style Designator: straight thru
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
C20SS1-4IN	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-455-5565?

The FSCG of the NSN 4820-00-455-5565 is 4820

Does the NSN 4820-00-455-5565 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-00-455-5565 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 4820-00-455-5565 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-455-5565 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 4820-00-455-5565 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Fri, Apr 25, 1969