Model: 749939-103

Check Valve

Properties:

Flow Control Device

Disk

Disk Loading Method

Spring

Bolt Hole Quantity

4 1st end

Bolt Hole Quantity

4 2nd end

Width

3.885 inches 2nd end

Width

4.010 inches 1st end

Length

4.010 inches 1st end

Length

4.010 inches 2nd end

Valve Operation Method

Automatic

Flange Shape

Rectangular with holes 1st end

Connection Type

Flange 2nd end

Connection Type

Flange 1st end

Mounting Position

Horizontal or vertical

Maximum Operating Pressure

120.0 pounds per square inch single response

Face To Face Distance

3.865 inches

Thickness

0.185 inches 1st end

Thickness

0.185 inches 2nd end

Bolt Hole Diameter

0.265 inches 1st end

Bolt Hole Diameter

0.265 inches 2nd end

Center To Center Distance Between Bolt Holes Along Length

3.250 inches 1st end

Center To Center Distance Between Bolt Holes Along Length

3.250 inches 2nd end

Center To Center Distance Between Bolt Holes Along Width

3.250 inches 1st end

Flange Face Design

Plain 1st end

Flange Face Design

Plain 2nd end

Material

Aluminum alloy 384.0

Media For Which Designed

Fuel/oil, hydrocarbon single response

Surface Treatment

Anodize

Surface Treatment Specification

Mil-a-8625, type 2 military specification single treatment response

Style Designator

Straight thru

NSN

4820-00-353-7642

Part Number

749939-103

Description

Valve,check

CAGE

98897

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 749939-103 NSN 4820-00-353-7642

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:

Trailers/Vehicles

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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