Model: W4421 3-8D

Check Valve

Properties:

Pipe Size Accommodated

0.375 inches 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Cone

Disk Loading Method

Spring

Renewable Seat Ring Type

Pressed-in

Connection Style

Plain, optional end (pipe) 1st end

Connection Type

Threaded internal pipe 1st end

Mounting Position

Horizontal or vertical

Maximum Operating Pressure

20.0 pounds per square inch single response

Media For Which Designed

Fuel/oil, hydrocarbon single response

Surface Treatment

Anodize

Style Designator

Straight thru

Thread Series Designator

Anpt 1st end

NSN

4820-00-540-1534

Part Number

W4421 3-8D

Description

Valve,check

CAGE

05477

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

Part W4421 3-8D NSN 4820-00-540-1534

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:

100.0000lbs

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:

127220

UFC:

64490

LTL:

77.5

LCL:

77.5

WCC:

594

TCC:

SHC:

ACC:

Equipment for Aircraft

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Schedule B and Export

Schedule B: 8481301010
SITC: 74730
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Check valves of copper having a pressure rating under 850 kpa