Model: 5159B-4MP-18.5

Safety Relief Valve

Properties:

Pipe Size Accommodated
0.500 inches 1st end
Pipe Size Accommodated
0.500 inches 2nd end
Thread Direction
Right-hand 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
-40.0 degrees fahrenheit 1st response
Maximum Operating Temp
250.0 degrees fahrenheit 2nd response
Connection Style
G46b plain (pipe) 2nd end
Connection Style
G9 plain, optional en (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 2nd end
Connection Type
Threaded internal pipe 1st end
Thready Qty Per Inch (tpi)
14 2nd end
Adjustable Pressure Range
+0.0/+1000.0 pounds per square inch
Maximum Operating Pressure
2500.0 pounds per square inch single response
Thread Size
0.500 inches 1st end
Thread Size
0.500 inches 2nd end
Opening Pressure Setting
18.5 pounds per square inch
Material
Copper alloy seat
Material
Copper alloy body
Media For Which Designed
Refrigerant 12 4th response
Media For Which Designed
Acetylene 2nd response
Media For Which Designed
Air 1st response
Media For Which Designed
Ammonia, gaseous 3rd response
Media For Which Designed
Hydrogen 5th response
Thread Series Designator
Npt 2nd end
Thread Series Designator
Npt 1st end
NSN
4820-00-881-2723
Part Number
5159B-4MP-18.5
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 5159B-4MP-18.5 NSN 4820-00-881-2723

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
127220
UFC:
64490
LTL:
77.5
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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