Model: 633958-7

Check Valve

Properties:

Thread Class

3a 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Disk

Disk Loading Method

Spring

Connection Style

Flared (tube) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded external tube 1st end

Mounting Position

Horizontal

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

Media For Which Designed

Fuel/oil, hydrocarbon single response

Surface Treatment

Anodize

Surface Treatment Specification

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

Style Designator

Straight thru

Thread Series Designator

Un 1st end

NSN

4820-00-684-4071

Part Number

633958-7

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 633958-7 NSN 4820-00-684-4071

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:

77.5

WCC:

594

TCC:

SHC:

ACC:

Equipment for Aircraft

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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