30803999

View detailed technical data, stock status, and sourcing information for: 30803999
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-328-2864

Item Name Code

27565

Assigment Date

10/30/1990 (35 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.

unable to decode stem material, unthreaded internal pipe first end connection type, water, salt media for which designed, socket w/brazing ring first end style 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
Stem Material: unable to decode
Media For Which Designed: water, salt
First End Connection Type: unthreaded internal pipe
First End Style Designator: socket w/brazing ring
First End Nominal Pipe Size Accommodated: 0.375 inches
Second End Relationship With First End: identical
Flow Control Device: disk
Flow Control Device Material: unable to decode
End Connection Quantity: 2
Outlet Pressure Range: +25.0 to 60.0 pounds per square inch
Regulation Type: automatic single stage
Valve Stem Design: single seat
Valve Loading Method: spring
Maximum Inlet Pressure Rating: 250.0 pounds per square inch
Filter: not included
Temp Rating: 165.0 fahrenheit nominal
Criticality Code Justification: feat
Special Features: weapon system essential. features - with o-ring and retainer ring.
Material: unable to decode
Material Document And Classification: 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
30803999	Fluid Pressure Regulating Valve
436 MARK I 30803999	Fluid Pressure Regulating Valve

FAQs

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

What is the FSCG of the NSN 4820-01-328-2864?

The FSCG of the NSN 4820-01-328-2864 is 4820

Does the NSN 4820-01-328-2864 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809015

Does NSN 4820-01-328-2864 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 4820-01-328-2864 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-328-2864 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 4820-01-328-2864 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Tue, Oct 30, 1990