Model: 493-16D28-1/4

Check Valve

Properties:

Thread Class

3b 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Disk Loading Method

Spring

Maximum Operating Temp

400.0 degrees fahrenheit single response

Connection Style

Gasket seal (boss) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded internal boss 1st end

Mounting Position

Horizontal or vertical

Thready Qty Per Inch (tpi)

12 1st end

Maximum Operating Pressure

3000.0 pounds per square inch single response

Thread Size

1.312 inches 1st end

Seat Angle

30.0 degrees 1st end

Material

Aluminum alloy body

Media For Which Designed

Hydraulic fluid, silicate-ester base single response

Surface Treatment

Anodize

Surface Treatment Specification

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

Style Designator

Straight thru

Thread Series Designator

Un 1st end

NSN

4820-01-192-6717

Part Number

493-16D28-1/4

Description

Valve,check

CAGE

09990

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 493-16D28-1/4 NSN 4820-01-192-6717

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:

60.0

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