NSN 4820-00-555-1221 NIIN 005551221 — Safety Relief Valve

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NSN

Item Name

Assigned

DEMIL

Shelf Life

UOM

Using Services

NSN:

		4820-00-555-1221
4820005551221

Description:

VALVE,SAFETY RELIEF

NSN Assigned:

01-JAN-63

DEMIL:

Shelf Life:

N/A

UOM:

Using Services:

Price Quote Get an up to date pricing and availability quote for this product. Order online or over the phone.

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

4820-00-555-1221 Specification Set by the OEM (see RNCC code 3)

Thread Direction AAJF:

RIGHT-Hand 1st end

Flow Control Device ADQU:

disk

Disk Loading Method ADSU:

spring

Valve Discharge Flow Rate ADSY:

3568.3 pounds per hour

Maximum Operating Temp AEHZ:

550.0 deg fahrenheit single response

Connection Style AHNC:

G9 plain, optional end (pipe) 2nd end

Valve Operation Method AQLR:

manual

Connection Type AWLS:

threaded internal pipe 2nd end

Adjustable Pressure Range CQCY:

+1.0/+250.0 pounds per square inch

Maximum Operating Pressure CQGM:

250.0 pounds per square inch single response

Nominal Thread Size CQJX:

0.500in. 2nd end ⁓2-1/64"

Opening Pressure Setting CSDC:

75.0 pounds per square inch

Material MATT:

copper alloy body

Media For Which Designed MEDA:

air single response

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:

1227

Cage Code:

37239

RNCC:

RNVC:

DAC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

1227-3/8

Cage Code:

37239

RNCC:

RNVC:

DAC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

1227

Cage Code:

37239

RNCC:

RNVC:

DAC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

1227-3/8

Cage Code:

37239

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.

4820-00-555-1221 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 X

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