Model: D539A2M5

Safety Relief Valve

Special Features:

Refrigerant 12 sixth media

Properties:

Pipe Size Accommodated
0.250 inches 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
250.0 degrees fahrenheit single response
Connection Style
G46b plain (pipe) 1st end
Connection Style
Plain (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st end
Features Provided
Pressure tight outlet side
Thready Qty Per Inch (tpi)
18 1st end
Maximum Operating Pressure
200.0 pounds per square inch single response
Thread Size
0.250 inches 1st end
Opening Pressure Setting
5.0 pounds per square inch
Material
Steel comp 303 body
Material
Steel comp 303 flow control device
Material
Steel comp 303 seat
Material Specification
Aisi 3031/sae 30303 assn standard single material response
Media For Which Designed
Ammonia, liquid 1st response
Media For Which Designed
Butane 2nd response
Media For Which Designed
Fuel/oil, hydrocarbon 3rd response
Media For Which Designed
Gas, inert 4th response
Media For Which Designed
Hydrogen 5th response
Style Designator
Straight through w/baffle
Thread Series Designator
Npt 1st end
NSN
4820-00-706-4591
Part Number
D539A2M5
Description
Valve,safety Relief
CAGE
91816

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.

Part D539A2M5 NSN 4820-00-706-4591

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05488
FIIG:
A046B0
Concept No.:
1
App. Key:
AP
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:
A
ESD:
ESD:
MMAC:
FR
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
127220
UFC:
64490
LTL:
77.5
LCL:
77.5
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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