Safety Relief Valve

NSN: 4820-00-173-2025 | Model: 5159T4MP30

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.

NSN Properties and Flags

NATO Stock Number

4820-00-173-2025

DEMIL

Pipe Size Accommodated

0.500 inches 2nd end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Disk Loading Method

Spring

Maximum Operating Temp

250.0 degrees fahrenheit single response

Connection Style

Plain, optional en (pipe) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded internal pipe 1st end

Features Provided

Pressure tight outlet side

Maximum Operating Pressure

2500.0 pounds per square inch single response

Thread Size

0.500 inches 2nd end

Opening Pressure Setting

30.0 pounds per square inch

Special Features

The end connection identified above as the second end is the valve inlet

Material

Steel comp 303se seat

Material Specification

Qq-s-764, type303se-canceled federal specification single material response seat

Media For Which Designed

Sulfur hexafluoride, gaseous single response

Style Designator

Straight through note: to be used for valve bodies of separable sections.

Test Data Document

17773-11290853 drawing (this is the basic governing drawing, such as a contractor drawing, original equipment manufacturer drawing, etc.; excludes any specification, standard or other document that may be referenced in a basic governing drawing)

Thread Series Designator

Nptf 2nd end

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

NSN 4820-00-173-2025 Datasheet

Supply Class (FSC):

Nonpowered Valves

Cross Reference:

5159T4MP30
11290853-1

Cage Codes:

Circor Aerospace, Inc. (CAGE 91816)
Ballistic Missile Defense Systems (CAGE 17773)

Schedule B & Trade:

Schedule B: 8481400000 (NAICS 332911)

Safety or relief valves
SITC: 74740

Safety or relief valves
End Use: 21180

Industrial machines, other

Identification:

HMIC

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

PMIC

U - Precious metal content is unknown

CRITL

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

Freight Information:

NMFC:

051080 - Faucets, bibcocks, gates valves
WCC:

736 - Plumbing supplies
SHC:

9 - Other or no special handling required (sh)
ADC:

A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
ACC:

E - Engineer supplies, other than those listed under code b.
LTL:

W - Rating variable
TCC:

Z - No special type of cargo code applicable

NSN Management Codes:

SOS
Sms
AAC
L
Quantity per pack
1
Unit of Measure
Ea
Shelf Life
N/A
Classification Control
U
MGMT_CTL
J2200x-
Repariability
This is a nonreparable item. if condemned or economically unserviceable, then dispose at the level authorized replace the item.

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $780.76 to $1,301.27..
Does NSN 4820-00-173-2025 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Army
What is the NIIN of NSN 4820-00-173-2025?
001732025 or 00-173-2025
Does NSN 4820-00-173-2025 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4820-00-173-2025?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Dec 03, 1971