1660W 4IN STL

View detailed technical data, stock status, and sourcing information for: 1660W 4IN STL
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-412-6804

Item Name Code

35935

Assigment Date

04/26/1995 (31 years ago)

A valve with one inlet and one outlet connection with outlet flow parallel to inlet flow. The flow is controlled by the action of a stem which lifts the disk perpendicularly off the center axis of its seat. The stem is at a 90 degree (1.5708 radians) angle to axis of flow. Excludes:valve, stop-check; cock, shutoff, screw stem; and valve, solenoid.

4.000 inches all ends nominal pipe size accommodated, butt weld pipe all ends connection type, beveled (pipe) all ends connection style, incl body 1, mesh screen 1, mesh protecting screen 1, spacer ring 1, cap 1, capscrew 3 special features, steel body material

Product Characteristics

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

Nominal Pipe Size Accommodated: 4.000 inches all ends
Connection Style: beveled (pipe) all ends
Connection Type: butt weld pipe all ends
Special Features: incl body 1, mesh screen 1, mesh protecting screen 1, spacer ring 1, cap 1, capscrew 3
Material: steel body
Material: steel corrosion resisting seat
Media For Which Designed: air single response

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
1600W-4IN	Vent Valve
1660W 4IN STL	Vent Valve
4-1600WSG	Vent Valve

FAQs

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

What is the FSCG of the NSN 4820-01-412-6804?

The FSCG of the NSN 4820-01-412-6804 is 4820

Does the NSN 4820-01-412-6804 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-01-412-6804 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 4820-01-412-6804 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-412-6804 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 4820-01-412-6804 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Wed, Apr 26, 1995