4820-01-374-4731

Find complete technical information, availability, and procurement data for: 4820-01-374-4731
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-374-4731

Item Name Code

27565

Assigment Date

04/23/1993 (33 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.

threaded internal pipe first end connection type, air media for which designed, plain first end style designator, unable to decode first end thread size and series/type designator, straight thru body style

Product Characteristics

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

Body Style: straight thru
Media For Which Designed: air
First End Connection Type: threaded internal pipe
First End Style Designator: plain
First End Thread Size And Series/Type Designator: unable to decode
First End Thread Direction: right-hand
Second End Relationship With First End: identical
Flow Control Device: diaphragm
End Connection Quantity: 2
Mounting Facility: panel
Outlet Pressure Range: +1.0 to 125.0 pounds per square inch
Regulation Type: 1st stage manual, 2nd stage automatic
Manual Control Method: knob
Valve Loading Method: spring
Remote Actuation Method: diaphragm
Maximum Inlet Pressure Rating: 300.0 pounds per square inch
Filter: not included
Temp Rating: 175.0 fahrenheit nominal
Material: unable to decode

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
R16-04-000	Fluid Pressure Regulating Valve
R16-04-G00	Fluid Pressure Regulating Valve

FAQs

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

What is the FSCG of the NSN 4820-01-374-4731?

The FSCG of the NSN 4820-01-374-4731 is 4820

Does the NSN 4820-01-374-4731 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809015

Does NSN 4820-01-374-4731 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 4820-01-374-4731 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-374-4731 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 4820-01-374-4731 was assigned to the Federal Catalog?

It was assigned 33 years ago, on Fri, Apr 23, 1993