Model: 7957A4

Check Valve

Properties:

Thread Class

2a 2nd end

Thread Direction

Right-hand 2nd end

Thread Direction

Right-hand 1st end

Flow Control Device

Disk

Connection Style

Flareless 2nd end

Connection Style

Plain (pipe) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded external pipe 1st end

Connection Type

Threaded external tube 2nd end

Mounting Position

Horizontal

Maximum Operating Pressure

50.0 pounds per square inch single response

Thread Size

0.250 inches 1st end

Thread Size

0.563 inches 2nd end

Seat Angle

12.0 degrees 2nd end

Material

Copper alloy body

Media For Which Designed

Fuel/oil, hydrocarbon single response

Style Designator

Straight thru

Thread Series Designator

Npt 1st end

Thread Series Designator

Unf 2nd end

NSN

4820-01-244-2366

Part Number

7957A4

Description

Valve,check

CAGE

39428

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 7957A4 NSN 4820-01-244-2366

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:

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:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

WCC:

594

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 8481301010
SITC: 74730
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

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