Model: H421

Restrictor Check Valve

Properties:

Thread Class

3a 2nd end

Thread Class

3a 1st end

Thread Direction

Right-hand 2nd end

Thread Direction

Right-hand 1st end

Aperture Diameter

0.095 inches

Flow Control Device

Poppet

Disk Loading Method

Spring

Connection Style

Flareless 1st end

Connection Style

Flareless 2nd end

Valve Operation Method

Automatic

Connection Type

Threaded external tube 1st end

Connection Type

Threaded external tube 2nd end

Mounting Position

Horizontal or vertical

Maximum Operating Pressure

3000.0 pounds per square inch single response

Thread Size

0.562 inches 2nd end

Thread Size

0.750 inches 1st end

Seat Angle

12.0 degrees 1st end

Seat Angle

12.0 degrees 2nd end

Material

Stainless steel

Media For Which Designed

Fuel/oil, hydrocarbon single response

Surface Treatment

Passivate

Style Designator

Straight thru

Thread Series Designator

Unf 1st end

Thread Series Designator

Unf 2nd end

NSN

4820-00-173-7379

Part Number

H421

Description

Valve,restrictor Check

CAGE

06239

A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. It does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.

Part H421 NSN 4820-00-173-7379

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

20520

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:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

127220

UFC:

64490

LTL:

77.5

LCL:

WCC:

576

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 8481302090
SITC: 74730
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Check valves of steel