Model: 646-16D

Check Valve

Special Features:

Bulkhead fitting on first end

Properties:

Thread Class

3a 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Disk Loading Method

Spring

Connection Style

Beaded (hose) 2nd end

Connection Style

Flared (tube) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded external tube 1st end

Connection Type

Unthreaded external hose 2nd end

Mounting Position

Horizontal or vertical

Thready Qty Per Inch (tpi)

12 1st end

Maximum Operating Pressure

60.0 pounds per square inch single response

Thread Size

1.312 inches 1st end

Seat Angle

37.0 degrees 1st end

Outside Diameter Tube Accommodated

1.000 inches 1st end

Material

Aluminum alloy flow control device

Media For Which Designed

Fuel/oil, hydrocarbon single response

Surface Treatment

Anodize

Surface Treatment Specification

Mil-a-8625 military specification single treatment response

Style Designator

Angle

Thread Series Designator

Un 1st end

NSN

4820-00-078-3528

Part Number

646-16D

Description

Valve,check

CAGE

77842

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 646-16D NSN 4820-00-078-3528

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:

0.2000lbs

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:

576

TCC:

SHC:

ACC:

Construction Materials

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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