189991

View detailed technical data, stock status, and sourcing information for: 189991
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-110-0145

Item Name Code

22113

Assigment Date

03/25/1981 (45 years ago)

An item specifically designed for mechanically or electronically positioning one or more radio frequency transmission line sections so as to couple it or them to other sections in a radio frequency transmission line system. The switching function may be operated by a manual actuator, an electromechanical actuator or by means of an arrangement of semiconductors and passive circuit devices. For items designed to provide the transfer of the electrical signal, see: switch,rotary and switch,electronic. Excludes: relay, (as modified).

0.923 inches nominal body outside diameter, 0.990 inches nominal flange diameter, 30.000 nominal seat angle in deg, 0.181 inches nominal flange seat to disk end height, 0.429 inches nominal under flange height

Product Characteristics

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

Flange Diameter: 0.990 inches nominal
Body Outside Diameter: 0.923 inches nominal
Flange Seat To Disk End Height: 0.181 inches nominal
Under Flange Height: 0.429 inches nominal
Seat Angle In Deg: 30.000 nominal
Seating Surface Shape: angular
Body Stepped Inside Diameter: 0.375 inches nominal second step
Body Stepped Inside Diameter: 0.429 inches nominal first step
Body Stepped Inside Diameter: 0.677 inches nominal third step
Material: steel corrosion resisting overall
Style Designator: plain flanged

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
189991	Valve Seat
190310-0030	Valve Seat
281756-0002	Valve Seat
281756-0002 ITEM 16	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-110-0145?

The FSCG of the NSN 4820-01-110-0145 is 4820

Does the NSN 4820-01-110-0145 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-110-0145 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 4820-01-110-0145 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-110-0145 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 4820-01-110-0145 was assigned to the Federal Catalog?

It was assigned 45 years ago, on Wed, Mar 25, 1981