991734

View detailed technical data, stock status, and sourcing information for: 991734
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-762-1236

Item Name Code

05488

Assigment Date

04/15/1972 (54 years ago)

A fluid line fitting having a pipe, tube or hose connection or a through hole to accommodate a bolt, fluid passage on one end. The other end must have an internal or external quick disconnect feature for connecting a mating part to form a quick disconnect coupling assembly. The fitting may incorporate a self-sealing feature for the purpose of automatically shutting off the flow of fluid when disconnected from its mating half. For self-sealing fittings with an external or internal threaded disconnect end, see coupling half, self-sealing. See also, connector, multiple, fluid pressure line.

spring disk loading method, poppet flow control device, 0.250 inches 1st end nominal pipe size accommodated, right-hand 1st end thread direction, 275.0 fahrenheit single response maximum operating temp

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: 0.250 inches 1st end
Thread Direction: right-hand 1st end
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 275.0 fahrenheit single response
Connection Style: plain,optional end(pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded internal pipe 1st end
Features Provided: pressure tight outlet side
Adjustable Pressure Range: +205.0 to 215.0 pounds per square inch
Maximum Operating Pressure: 2500.0 pounds per square inch single response
Nominal Thread Size: 0.250 inches 1st end
Opening Pressure Setting: 210.0 pounds per square inch
Material: copper alloy 360 overall
Material Document And Classification: qq-b-626,alloy alloy 360 fed spec single material response overall
Media For Which Designed: water-oil-gas single response
Style Designator: angle
Thread Series Designator: npt 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
5159B2M210	Safety Relief Valve
991734	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-762-1236?

The FSCG of the NSN 4820-00-762-1236 is 4820

Does the NSN 4820-00-762-1236 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-762-1236 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 4820-00-762-1236 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-762-1236 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 4820-00-762-1236 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Sat, Apr 15, 1972