Model: 540 1-2

Pressure And Temper Relief Valve

Special Features:

Temperature water rating at 50000-btu/hr

Properties:

Body Material

Brass

Body Style

Angle give "adqm" and "adqn" only if flanged one or two ends

Tempurature Rating

210.0 degrees fahrenheit

Media For Which Designed

Water, fresh

First End Connection Type

Threaded internal pipe

First End Style Designator

Optional end

First End Pipe Size Accommodated

0.500 inches

First End Thread Direction

Right-hand

Second End Relationship With First End

Not identical

Second End Connection Type

Threaded external pipe

Second End Style Designator

Plain

Second End Pipe Size Accommodated

0.500 inches

Second End Thread Direction

Right-hand

Seat Material

Brass

Flow Control Device

Disk, lift

Flow Control Device Material

Steel, corrosion resisting

End Connection Quantity

Opening Pressure Setting

175.0 pounds per square inch

Adjustable Pressure Range

+75.0/+175.0 pounds per square inch

Bulb Length

4.000 inches

Bulb Diameter

0.812 inches

Tempurature Adjustability

Not adjustable

Tempurature Control Device Type

Fusible

NSN

4820-00-207-8821

Part Number

540 1-2

Description

Valve,relief,pressure And Temper

CAGE

79227

A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also valve, safety relief and valve, regulating. Temperature.

Part 540 1-2 NSN 4820-00-207-8821

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16996

FIIG:

A07100

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:

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Schedule B and Export

Schedule B: 8481400000
SITC: 74740
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Safety or relief valves