Safety Relief Valve NSN 4820-00-163-5171

Item Description

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: 4820-00-163-5171

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Features and Characteristics

Flow Control Device

Disk

Bonnet Type

Exposed spring

Bonnet Attachment Method

Bolted

Disk Loading Method

Spring

Valve Discharge Flow Rate

18570.0 pounds per hour

Renewable Seat Ring Type

Threaded

Bolt Hole Quantity

8 2nd end

Flange Shape

Round with holes 2nd end

Features Provided

Pressure tight outlet side

Valve Size

1.500 inches

Opening Pressure Setting

1325.0 pounds per square inch

Outside Diameter

7.500 inches 2nd end

Bolt Hole Diameter

1.125 inches 1st end

Bolt Circle Diameter

5.875 inches 2nd end

Flange Face Design

Recessed straight 1st end

Raised Face Height

0.062 inches 2nd end

Raised Face Diameter

4.125 inches 2nd end

Recess Diameter

6.125 inches 1st end

Recess Depth

0.062 inches 1st end

Style Designator

Angle flanged ends

Reference Number Differentiating Characteristics

As differentiated by the valve discharge flow rate requirement and as modified by crosby valve and gage co drawing h48241

FSC

4820 Nonpowered Valves

NIIN

001635171

NSN

4820001635171

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

A39344

Cage Code:

15187

Status:

MSDS:

Part Number:

A39344ASSY MOD9

Cage Code:

15187

Status:

MSDS:

Part Number:

39344M0D9

Cage Code:

15187

Status:

MSDS:

Part Number:

H3315562

Cage Code:

80064

Status:

MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov

Schedule B Number: 8481400000
NAICS: 332911
SITC: 74740
Description: Safety or relief valves
End Use (Code 21180):
Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-00-163-5171

What are the manufacturers of nsn 4820001635171?

Pentair Valves & Controls Us Lp (15187)
Naval Ship Systems Command (80064)

Does this nsn 4820001635171 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820001635171
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.

Does nsn 4820001635171 contain any precious metals?
No precious metal content.

Does nsn 4820001635171 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820001635171?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)

INC

FIIG

App. Key

Cond. Code

Status

INC:

05488

FIIG:

A046B0

App. Key:

Cond. Code:

Status:

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