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
2
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.:
1
App. Key:
AR
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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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

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