Model: R338

Check Valve

Properties:

Thread Class

3b 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Disk Loading Method

Spring

Connection Style

Gasket seal (boss) 1st end

Connection Type

Threaded internal boss 1st end

Thready Qty Per Inch (tpi)

20 1st end

Maximum Operating Pressure

5.0 pounds per square inch single response

Thread Size

0.438 inches 1st end

Seat Angle

32.0 degrees 1st end

Material

Aluminum alloy body

Material

Aluminum alloy seat

Media For Which Designed

Air single response

Surface Treatment

Anodize

Style Designator

Straight thru

Thread Series Designator

Unf 1st end

NSN

4820-00-541-0452

Part Number

R338

Description

Valve,check

CAGE

81833

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 R338 NSN 4820-00-541-0452

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:

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: 8481309000
SITC: 74730
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Check valves of materials other than copper, iron or steel