803-5001003-B931

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-131-3042

Item Name Code

20962

Assigment Date

05/07/1982 (44 years ago)

A valve with a stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. In the second position, the valve disk is lifted from the seat to allow a flow of fluid in either direction through the valve. The valve disk may be spring loaded. See also valve, stop-check and valve, stop-lift-check.

bolted bonnet attachment method, streamlined with one brazing ring (tube) all ends connection style, outside screw-yoke bonnet type, 250.0 fahrenheit single response maximum operating temp, manual valve operation method

Product Characteristics

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

Bonnet Type: outside screw-yoke
Bonnet Attachment Method: bolted
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: streamlined with one brazing ring (tube) all ends
Valve Operation Method: manual
Connection Type: unthreaded internal tube all ends
Maximum Operating Pressure: 700.0 pounds per square inch single response
Nominal Outside Diameter Tube Accommodated: 2.500 inches all ends
Material: bronze body
Material: nickel alloy 400 or nickel alloy r-405 stem
Material: plastic polytetrafluoroethylene packing
Material: plastic polytetrafluoroethylene seat
Material: steel corrosion resisting flow control device
Material Document And Classification: qq-n-281 fed spec single material response stem
Material Document And Classification: qq-c-390,alloy d4 fed spec single material response body
Material Document And Classification: qq-s-763 fed spec single material response flow control device
Media For Which Designed: steam 1st response
Media For Which Designed: water-oil-gas 2nd response
Style Designator: straight thru

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
2621-926-03 ASSY ACLJ 2.5IN	Ball Valve
803-5001003-B931	Ball Valve

FAQs

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

What is the FSCG of the NSN 4820-01-131-3042?

The FSCG of the NSN 4820-01-131-3042 is 4820

Does the NSN 4820-01-131-3042 have a Schedule B code assigned?

Yes, the Schedule B code is 8481805090

Does NSN 4820-01-131-3042 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 4820-01-131-3042 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-131-3042 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 4820-01-131-3042 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Fri, May 7, 1982