Model: 668451-1

Check Valve

Properties:

Thread Class

3a 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Disk Loading Method

Spring

Renewable Seat Ring Type

Pressed-in

Maximum Operating Temp

265.0 degrees fahrenheit single response

Connection Style

Flareless 1st end

Connection Type

Threaded external tube 1st end

Mounting Position

Horizontal or vertical

Thready Qty Per Inch (tpi)

16 1st end

Maximum Operating Pressure

15.0 pounds per square inch single response

Thread Size

0.750 inches 1st end

Seat Angle

12.0 degrees 1st end

Outside Diameter Tube Accommodated

0.500 inches 1st end

Material

Aluminum alloy body

Material

Aluminum alloy seat

Media For Which Designed

Fuel/oil, hydrocarbon single response

Style Designator

Straight thru

Thread Series Designator

Unf 1st end

NSN

4820-00-826-1366

Part Number

668451-1

Description

Valve,check

CAGE

98897

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 668451-1 NSN 4820-00-826-1366

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:

127220

UFC:

64490

LTL:

77.5

LCL:

WCC:

576

TCC:

SHC:

ACC:

Construction Materials

Pricing & Availability Check

Submit this form for stock availability and pricing.

How to Order

Ordering from buyaircraftparts.com

If you would like to order this check valve (NSN 4820-00-826-1366) please submit the pricing and availability form above to receive an up to date quote by email. If you agree to the pricing and terms you can e-sign your order online!

We are pleased to have the opportunity to serve you.

Have a Question

Hours:	08:00-18:00 Eastern Standard Time
Phone:	+1 470-231-0824
Email:	Contact Form »

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