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4820-01-157-3170

Safety Relief Valve

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Official Item Classification

Name
Safety Relief Valve
(NSN) National Stock Number
4820-01-157-3170
(FSG) Federal Supply Group
48 Valves
(FSC) Federal Supply Classification
4820 Nonpowered Valves
(INC) Item Name Code
05488
(FIIG) Federal Item Identification Guide
A046B0
Date
07/04/1983 (43 years ago)

right-hand all ends thread direction, plain,optional end(pipe) all ends connection style, ball flow control device, automatic valve operation method, threaded internal pipe all ends connection type

Specs & Compatibility

Thread Direction

right-hand all ends

Flow Control Device

ball

Connection Style

plain,optional end(pipe) all ends

Valve Operation Method

automatic

Connection Type

threaded internal pipe all ends

Nominal Thread Size

0.500 inches all ends

Material

steel overall

Style Designator

angle

Thread Series Designator

npt all ends

Regulatory Compliance

Precious Metals Indicator
A

Item does not contain precious metal.

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0005488

Related Hardware Products

Part Number Description
HVR0009 Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-01-157-3170?
The FSCG of the NSN 4820-01-157-3170 is 4820
Does the NSN 4820-01-157-3170 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-157-3170 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 4820-01-157-3170 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-01-157-3170 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 4820-01-157-3170 was assigned to the Federal Catalog?
It was assigned 43 years ago, on Mon, Jul 4, 1983