Model: 40688-8

Temperature Regulating Valve

Special Features:

3valve capacity: 18 gpm; valve fails with 95% flow to cooler; this valve has thermostatic assembly p/n 50002-05, nsn 4820-01-232-2900, find 3 (gasket), find 4 (bulb bushing), find 36 (3 tailpieces without brazing rings), find 37 (3 union nuts).

Properties:

Body Material

Bronze, astm b61

Body Style

Tee

Stem Material

Steel, corrosion resisting

Furnished Items

Union nut and tailpiece and adjustment stem

First End Connection Type

Unthreaded internal pipe

First End Style Designator

Grooved inside

First End Pipe Size Accommodated

1.250 inches

Second End Relationship With First End

Identical

Third End Relationship With Preceding Ends

Identical with first end

Seat Material

Steel, corrosion resisting

Packing Material

Plastic, polytetrafluoroethylene

Flow Control Device

Piston, top guided

End Connection Quantity

Capillary Tube Length

12.000 inches

Bulb Diameter

1.125 inches

Tempurature Adjustability

Adjustable

Maximum Inlet Pressure Rating

100.0 pounds per square inch

Thermostatic Element

Liquid immersion type

End Application

Seawolf class ssn

Tempurature Rating

Between 60.0 degrees fahrenheit and 90.0 degrees fahrenheit

End Connection Specification/std

Mil-f-24227

Valve Size

1.250 inches

Part Name Assigned By Controlling Agency

1-1/4" trac style a 3-way thermostatic temperature regulating valve

Specification Data

81349-mil-v-19772 government specification

Nondefinitive Specification/std Data

1, style a type

NSN

4820-01-518-7401

Part Number

40688-8

Description

Valve,regulating,temperature

CAGE

55378

A self-acting valve designed for controlling, by means of a thermostatic element, the flow of liquids or gases therethrough. The thermostatic element is located in liquid or gas whose temperature is controlled by the heat of the liquid or gas flowing through the valve. See also valve, relief, pressure and temperature.

Part 40688-8 NSN 4820-01-518-7401

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05492

FIIG:

A21100

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: 8481809015
SITC: 74780
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Regulator valves, self-operating, for controlling variables such as temperature, pressure, flow and liquid level