Safety Relief Valve

S20162
(NSN) National Stock Number
4820-00-614-1654
Federal Supply Classification
4820 Nonpowered Valves
Item Name Code
05488
Schedule B Code
8481400000
Summary

Right-hand all ends thread direction, disk or stem flow control device, plain (pipe) 1st end connection style, plain,optional end(pipe) 2nd end connection style, automatic valve operation method, threaded external pipe 1st end connection type

DAC HCC DMIL RNCC
X - - 5
RNVC SADC MSDS RNAAC
2 - - XX
Identification

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.

INC FIIG Concept Condition
05488 A046B0 1 2
Specifications
Thread Direction
right-hand all ends
Details The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.
Flow Control Device
disk or stem
Details The part that controls the flow through the item.
Connection Style
plain (pipe) 1st end
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.
Connection Style
plain,optional end(pipe) 2nd end
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.
Valve Operation Method
automatic
Details The means used to control the operation of the valve.
Connection Type
threaded external pipe 1st end
Details Indicates the type of connection/s/.
Connection Type
threaded internal pipe 2nd end
Details Indicates the type of connection/s/.
Nominal Thread Size
0.500 inches 1st end
Details A designation that is used for the purpose of general identification of the thread.
Nominal Thread Size
0.750 inches 2nd end
Details A designation that is used for the purpose of general identification of the thread.
Material
steel body
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material
steel flow control device
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material
steel seat
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Style Designator
straight thru
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
Thread Series Designator
npt all ends
Details A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
S20162 076M6 5 - 5 2 - ZZ
2-953-1 86768 X - 5 9 - XX
1756327 80064 2 - 3 2 - AX
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
N U - -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
64490 - P -
RVC WCC TCC SHC
- 594 Z 9
Price and Availability Quote

Send us a quick request for quote using the form below:

Provided with every order

Order with confidence, we are a valued certified supplier serving customers in the military and aerospace industries.

  • Counterfeit Parts Prevention
  • 100% Product Inspections
  • 7 Year Record Retention
  • On Time Delivery
  • HAZMAT Certified
  • Worldwide Shipping
FAQs
Frequently asked questions for NSN 4820-00-614-1654
What is the NIIN of the NSN 4820-00-614-1654?
The National Item Identification Number (NIIN) of the NSN 4820-00-614-1654 is 00-614-1654
When the NSN 4820-00-614-1654 was assigned to the Federal Catalog?
It was assigned 62 years ago, on Tue, Jan 1, 1963
Does the NSN 4820-00-614-1654 contain any precious metals?
Type/content is unknown
Does the NSN 4820-00-614-1654 contain any hazardous material?
No data in HMIRS

Can't Find It

If you didn't find what you need, don't worry, we're here to help! Our team is ready to help you find exactly what you need. Click below to contact us.

Similar Products
Who we are?

At our core, we specialize in sourcing and supplying high-quality NSN (National Stock Number) parts to industries that demand precision and reliability.

From aerospace and defense to manufacturing and logistics, we provide the essential components that keep critical systems running.

Contact
350 Tenth Ave
San Diego, CA, 92101
United States
© 2025 National Stock Number (NSN) Parts Store, Inc. All rights reserved.
Made in USA