NSN 4820-00-954-3902 NIIN 009543902 — Safety Relief Valve

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NSN

Item Name

Assigned

DEMIL

Shelf Life

UOM

Using Services

NSN:

		4820-00-954-3902
4820009543902

Description:

VALVE,SAFETY RELIEF

NSN Assigned:

11-MAY-66

DEMIL:

Shelf Life:

N/A

UOM:

Using Services:

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Quality Commitment

Serving our customers with quality and safety first.

AS9120 Certified
Audited supply chain
ITAR Registered
DDTC Registered
HAZMAT Certified
Customer service objectives
Every product 100% inspected

4820-00-954-3902 Specification Set by the OEM (see RNCC code 3)

Nominal Pipe Size Accommodated AAAR:

0.750in. 1st end

Thread Direction AAJF:

RIGHT-Hand 1st end

Flow Control Device ADQU:

poppet

Disk Loading Method ADSU:

spring

Connection Style AHNC:

G46B plain (pipe) 1st end

Valve Operation Method AQLR:

automatic

Connection Type AWLS:

threaded external pipe 1st end

Features Provided CBBL:

pressure tight outlet side

Thread Quantity Per Inch CMLP:

14 1st end

Adjustable Pressure Range CQCY:

+5.0/+15.0 pounds per square inch

Nominal Thread Size CQJX:

0.750in. 1st end ⁓1/64"

Criticality Code Justification CRTL:

feat

Special Features FEAT:

clean for oxygen

Material MATT:

copper alloy body

Style Designator STYL:

Thread Series Designator THSD:

npt 1st end

Cross Reference Parts Part numbers that meet the specification outlined on this page and set by the OEM

Part Number

Cage

RNCC

RNVC

DAC

RNAAC

Status

MSDS

SADC

Part Number:

P178-27

Cage Code:

99251

RNCC:

RNVC:

DAC:

RNAAC:

Status:

MSDS:

SADC:

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

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05488

FIIG:

A046B0

Concept No.:

App. Key:

Cond. Code:

Status:

Definition Definition of approved item name (AIN): "VALVE,SAFETY RELIEF"

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.

4820-00-954-3902 Material Hazmat, Precious Metals, Criticality, Enviroment, and ESD

HMIC

PMIC

ESD

ENAC

ADPE

CRITL

HMIC:

PMIC:

ESD:

ADPE:

CRITL:

Hazmat (HMIC) N

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

Precious Metals (PMIC) U

Precious metal content is unknown

Criticality Y

The item does not have a nuclear hardened feature but does have other critical feature(s) such as tolerance, fit restrictions or application.

Identification Codes

HMIC: Hazardous Material Indicator Code. A one position code that identifies a hazardous item.

PMIC: Precious Metal Indicator Code. A one position code which identifies items that have precious metals as part of their content. precious metals are those metals generally considered to be uncommon, highly valuable, and relatively superior in certain properties such as resistance to corrosion and electrical conductivity.

ESD: Electrostatic Discharge. Indicates if an item is susceptible to electrostatic discharge or electromagnetic interference damage. electrostatic discharge damage occurs when an accumulation of static electricity generated by the relative motion or separation of materials is released to another item by direct contact. electromagnetic interference damage occurs when an item comes into proximity with an electrostatic or magnetic field.

ENAC: Enviromental Attribute Code. Identifies items with environmentally preferred characteristics.

CRITL: Criticality Indicator Code. Indicates an item is technically critical by tolerance, fit, application, nuclear hardness properties, or other characteristics.