NSN

National Stock Number:

4820-00-288-6891 4820002886891

TXT

Description:

Safety Relief Valve

INC

Item Name Code:

05488

MRC:

The part that controls the flow through the item.ADQU

Flow Control Device:

Poppet

MRC:

Indicates the type of housing on the item that accommodates the stem packing or spring.ADSR

Bonnet Type:

Inside spring

MRC:

The means by which the bonnet is attached to the item.ADST

Bonnet Attachment Method:

Threaded

MRC:

The rated valve discharge capacity per unit of time.ADSY

Valve Discharge Flow Rate:

13000.0 pounds per hour

MRC:

The number of bolt holes provided on the item.AECS

Bolt Hole Quantity:

8 1st end

MRC:

The number of bolt holes provided on the item.AECS

Bolt Hole Quantity:

8 2nd end

MRC:

The means used to control the operation of the valve.AQLR

Valve Operation Method:

Automatic

MRC:

The physical configuration of the flange.ARKN

Flange Shape:

Round with holes 1st end

MRC:

The physical configuration of the flange.ARKN

Flange Shape:

Round with holes 2nd end

MRC:

Indicates the type of connection/s/.AWLS

Connection Type:

Flange 2nd end

MRC:

Indicates the type of connection/s/.AWLS

Connection Type:

Flange 1st end

MRC:

Designates the size of the valve.CCFG

Valve Size:

2.000 inches

MRC:

The nominal length of a straight line which passes through the center of an item,and terminates at the outside circumference.CWCD

Outside Diameter:

6.500 inches 1st end

MRC:

The nominal length of a straight line which passes through the center of an item,and terminates at the outside circumference.CWCD

Outside Diameter:

7.562 inches 2nd end

MRC:

A nominal measurement of the smallest dimension of an item,in distinction from length or width.CWCK

Thickness:

0.812 inches 2nd end

MRC:

A nominal measurement of the smallest dimension of an item,in distinction from length or width.CWCK

Thickness:

1.000 inches 1st end

MRC:

None.CWCL

First Connection Face To Centerline Distance:

5.500 inches

MRC:

The nominal length of a straight line which passes through the center of the bolt hole,and terminates at the circumference.CWCQ

Bolt Hole Diameter:

0.688 inches 1st end

MRC:

The nominal length of a straight line which passes through the center of the bolt hole,and terminates at the circumference.CWCQ

Bolt Hole Diameter:

0.812 inches 2nd end

MRC:

None.CWCR

Second Connection Face To Centerline Distance:

5.312 inches

MRC:

The nominal length of a straight line which passes through the center of the bolt circle,and terminates at the circumference.CWCT

Bolt Circle Diameter:

5.000 inches 1st end

MRC:

The nominal length of a straight line which passes through the center of the bolt circle,and terminates at the circumference.CWCT

Bolt Circle Diameter:

6.000 inches 2nd end

MRC:

The design of the flange face.CWDF

Flange Face Design:

Raised straight 1st end

MRC:

The design of the flange face.CWDF

Flange Face Design:

Plain 2nd end

MRC:

A nominal measurement from the bottom to the top surface of a raised face,in distinction from depth.CWDH

Raised Face Height:

0.250 inches 1st end

MRC:

The nominal length of a straight line which passes through the center of a raised face,and terminates at the circumference.CWDL

Raised Face Diameter:

3.625 inches 1st end

MRC:

The chemical compound or mechanical mixture properties of which the item is fabricated.MATT

Material:

Steel body

MRC:

The chemical compound or mechanical mixture properties of which the item is fabricated.MATT

Material:

Stainless steel flow control device

MRC:

The chemical compound or mechanical mixture properties of which the item is fabricated.MATT

Material:

Stainless steel seat

MRC:

The chemical compound or mechanical mixture properties of which the item is fabricated.MATT

Material:

Stainless steel stem

MRC:

The style designation indicating the configuration that most nearly corresponds to the appearance of the item.STYL

Style Designator:

Err-090

MRC:

The style designation indicating the configuration that most nearly corresponds to the appearance of the item.STYL

Style Designator:

Angle flanged ends

MRC:

A feature of the item of supply which must be specifically recorded when the reference number covers a range of items.ZZZY

Reference Number Differentiating Characteristics:

Right hand valve

Code	Definition
FN	Factory New. Parts manufactured by then OEM and includes manufacturer certification.
NE	New. Parts manufactured by the OEM. May include manufacturer certification or company certification.
NS	New Surplus. New material item purchased from excess inventory.
OH	Overhauled. Product has been rebuilt and tested in accordance with the manufacturer's specifications by a repair shop (MRO).
SV	Serviceable product.
AR	As Removed. Product removed from aircraft or platform with no guarentee on the functionality of the part.
RP	Repairable. Product can be repaired by a MRO and be given a FAA 8130 or EASA Form 1 certification.

Part Number A20684RH

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