Model: 259A4BT1-5

Check Valve

Special Features:

Flow direction port to male port

Properties:

Thread Class

3a 1st end

Thread Class

3b 2nd end

Thread Direction

Right-hand 2nd end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Disk Loading Method

Spring

Maximum Operating Temp

225.0 degrees fahrenheit single response

Connection Style

Flared (tube) 1st end

Connection Style

Gasket seal (boss) 2nd end

Valve Operation Method

Automatic

Connection Type

Threaded external tube 1st end

Connection Type

Threaded internal boss 2nd end

Mounting Position

Horizontal or vertical

Maximum Operating Pressure

3000.0 pounds per square inch single response

Thread Size

0.437 inches 1st end

Thread Size

0.437 inches 2nd end

Seat Angle

37.0 degrees 1st end

Outside Diameter Tube Accommodated

0.250 inches 1st end

Outside Diameter Tube Accommodated

0.250 inches 2nd end

Material

Aluminum alloy

Media For Which Designed

Hydraulic fluid, petroleum base single response

Style Designator

Straight thru

Thread Series Designator

Unf 1st end

Thread Series Designator

Unf 2nd end

NSN

4820-00-598-4364

Part Number

259A4BT1-5

Description

Valve,check

CAGE

91816

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 259A4BT1-5 NSN 4820-00-598-4364

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:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

WCC:

576

TCC:

SHC:

ACC:

Construction Materials

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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