T138-4SS-1P

View detailed technical data, stock status, and sourcing information for: T138-4SS-1P
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-059-3526

Item Name Code

05486

Assigment Date

04/10/1978 (48 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

manual valve operation method, rubber butadiene-acrylonitrile class nbr seat material, 20.0 pounds per square inch single response maximum operating pressure, 150.0 fahrenheit single response maximum operating temp, rubber butadiene-acrylonitrile class nbr packing material

Product Characteristics

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

Maximum Operating Temp: 150.0 fahrenheit single response
Valve Operation Method: manual
Maximum Operating Pressure: 20.0 pounds per square inch single response
Material: rubber butadiene-acrylonitrile class nbr packing
Material: rubber butadiene-acrylonitrile class nbr seat
Material: steel comp 303 body
Material: steel comp 303 stem
Media For Which Designed: air single response
Surface Treatment: passivate
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment 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
C9269-1	Stop-Check Valve
T138-4SS-1P	Stop-Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-059-3526?

The FSCG of the NSN 4820-01-059-3526 is 4820

Does the NSN 4820-01-059-3526 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-059-3526 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 4820-01-059-3526 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-059-3526 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 4820-01-059-3526 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Mon, Apr 10, 1978