Model: 21-4

Check Valve

Properties:

Flow Control Device

Disk

Bolt Hole Quantity

16 all ends

Flange Shape

Round with holes all ends

Connection Type

Flange all ends

Mounting Position

Horizontal

Valve Size

16.000 inches

Outside Diameter

23.500 inches all ends

Face To Face Distance

30.000 inches

Thickness

1.437 inches all ends

Bolt Hole Diameter

1.125 inches all ends

Bolt Circle Diameter

1.125 inches all ends

Center To Center Distance Between Bolt Holes Along Width

21.250 inches all ends

Flange Face Design

Plain all ends

Material

Copper alloy body

Style Designator

Straight through flanged ends

NSN

4820-01-473-4222

Part Number

21-4

Description

Valve,check

CAGE

30263

Part 21-4 NSN 4820-01-473-4222

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05487

FIIG:

A530B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

WCC:

594

TCC:

SHC:

ACC:

Trailers/Vehicles

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