Model: 4X997

Check Valve

Special Features:

Weapon system essential

Properties:

Thread Class

3a 2nd end

Thread Direction

Right-hand all ends

Flow Control Device

Disk

Maximum Operating Temp

450.0 degrees fahrenheit single response

End Application

F-4 aircraft support equipment.

Connection Style

Plain (pipe) 1st end

Connection Style

Plain (tube) 2nd end

Valve Operation Method

Automatic

Connection Type

Threaded external pipe 1st end

Connection Type

Threaded external tube 2nd end

Mounting Position

Horizontal

Thready Qty Per Inch (tpi)

16 2nd end

Maximum Operating Pressure

250.0 pounds per square inch single response

Thread Size

0.375 inches 1st end

Thread Size

0.750 inches 2nd end

Criticality Code Justification

Feat

Material

Copper alloy body

Media For Which Designed

Air single response

Style Designator

Straight thru

Thread Series Designator

Npt 1st end

Thread Series Designator

Unj 2nd end

NSN

4820-01-099-9567

Part Number

4X997

Description

Valve,check

CAGE

25795

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 4X997 NSN 4820-01-099-9567

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:

0.1000lbs

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:

WCC:

576

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 8481301090
SITC: 74730
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

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