4820-01-278-0911

Find complete technical information, availability, and procurement data for: 4820-01-278-0911
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-278-0911

Item Name Code

32559

Assigment Date

04/30/1988 (38 years ago)

A value designed to automatically maintain within close limits a predetermined pressure within a closed system regardless of the higher fluctuating or constant inlet pressure. The excess pressure is by-passed to the accumulator or reservoir in lieu of passing through the entire system. It is designed primarily for use in refrigeration and air conditioning systems. Excludes:valve, regulating, fluid pressure and valve, calibrated flow.

1.250 inches nominal port diameter, 1 stem accommodation quantity, 2 port quantity, plastic material, straight port configuration

Product Characteristics

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

Port Quantity: 2
Port Diameter: 1.250 inches nominal
Stem Accommodation Quantity: 1
Port Configuration: straight
Material: plastic

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
T-590-Y-BR-20-1 1/4BALL	Ported Valve Ball

FAQs

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

What is the FSCG of the NSN 4820-01-278-0911?

The FSCG of the NSN 4820-01-278-0911 is 4820

Does the NSN 4820-01-278-0911 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-278-0911 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 4820-01-278-0911 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-278-0911 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 4820-01-278-0911 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Sat, Apr 30, 1988