4820-01-185-4305

Safety Relief Valve

Find complete technical information, availability, and procurement data for NSN 4820-01-185-4305 All details are based on official government and industry records to support accurate and compliant procurement.

Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-185-4305

Item Name Code

05488

Assigment Date

07/29/1984 (42 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.

plain (pipe) 2nd end connection style, inside screw bonnet type, automatic valve operation method, +525.0 to 900.0 pounds per square inch adjustable pressure range, threaded bonnet attachment method

Characteristics

Below are the official specifications and performance details for this part, including technical data, material composition, and compliance information.

Bonnet Type: inside screw
Bonnet Attachment Method: threaded
Connection Style: plain (pipe) 2nd end
Valve Operation Method: automatic
Adjustable Pressure Range: +525.0 to 900.0 pounds per square inch
Maximum Operating Pressure: 6000.0 pounds per square inch single response
Nominal Thread Size: 0.500 inches 2nd end
Nominal Thread Size: 1.250 inches 1st end
Material: bronze body
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 1st end

Related Parts & Specifications

This NSN includes a range of related parts designed for specific operational needs. Review each item below to find in-depth specifications, functional details, and guidance for correct application and replacement.

Part Number	Name
PL1867.438DRF 525T900PSI	Safety Relief Valve

Classification Data

Detailed NSN information including identification codes, classification data, and key indicators used for cataloging, logistics, and supply management.

Type of Item Identification
Demilitarization
Criticality
Federal Item Identification Guide
Precious Metals Indicator
Pseudo Item Name Code
Hazardous Material Indicator
Schedule B Code

Freight Information

Comprehensive freight classifications, shipping codes, and handling specifications for domestic and international transport compliance.

Major Organizational Entity
National Motor Freight Classification Item Number
National Motor Freight Classification Sub-Item Number
Uniform Freight Classification Item Number
National Motor Freight Class Rating
Water Commodity
Type of Cargo
Special Hand
Air Dimension
Air Commodity
National Motor Freight Description

FAQs

Get insights on installation procedures, operating conditions, care instructions, industry regulations, and common issues. FAQs below provide key information for 4820-01-185-4305

What is the FSCG of the NSN 4820-01-185-4305?

The FSCG of the NSN 4820-01-185-4305 is 4820

Does the NSN 4820-01-185-4305 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-185-4305 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 4820-01-185-4305 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-185-4305 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 4820-01-185-4305 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Sun, Jul 29, 1984