D661-1263

View detailed technical data, stock status, and sourcing information for: D661-1263
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for part D661-1263 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-142-7823

Item Name Code

05488

Assigment Date

11/20/1982 (43 years ago)

A valve having two or more ports with valve stem or pilot needle in a normally open or closed position. It is specifically designed to stop or start or change the flow of fluid by means of the magnetic action of an electric coil on a moveable core or plunger. The valve may be equipped with a manual opening or closing device. For items with three or more ports that utilize a reciprocating slide with recess areas which mate with ports in an integral or replaceable ported sleeve, see valve (1), linear, directional control. It may be inline or cartridge (manifold) design. Excludes:valve (1), butterfly.

2a 1st end thread class, right-hand 1st end thread direction, disk flow control device, spring disk loading method, right-hand 2nd end 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 Class: 2a 1st end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: disk
Disk Loading Method: spring
Connection Style: flared (tube) 1st end
Connection Style: plain (pipe) 2nd end
Valve Operation Method: automatic
Connection Type: threaded external pipe 2nd end
Connection Type: threaded external tube 1st end
Nominal Thread Size: 0.500 inches 2nd end
Nominal Thread Size: 0.875 inches 1st end
Seat Angle: 45.0 degrees 1st end
Opening Pressure Setting: 375.0 pounds per square inch
Material: copper alloy body
Style Designator: straight thru
Thread Series Designator: npt 2nd end
Thread Series Designator: unf 1st end

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
A-15514-375	Safety Relief Valve
D661-1263	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-142-7823?

The FSCG of the NSN 4820-01-142-7823 is 4820

Does the NSN 4820-01-142-7823 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-142-7823 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 4820-01-142-7823 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-142-7823 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 4820-01-142-7823 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Sat, Nov 20, 1982