Model: 5120A4TB975

Safety Relief Valve

Special Features:

Media for pressure/temp is chemically inert fluids

Properties:

Thread Class
3a 2nd end
Thread Class
3a 1st end
Thread Direction
Right-hand 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
300.0 degrees fahrenheit single response
Connection Style
G4 gasket sea (boss) 1st end
Connection Style
G42 flared (tube) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external tube 2nd end
Connection Type
Threaded internal tube 1st end
Features Provided
Pressure tight outlet side
Thready Qty Per Inch (tpi)
20 2nd end
Maximum Operating Pressure
2000.0 pounds per square inch single response
Thread Size
0.437 inches 1st end
Thread Size
0.438 inches 2nd end
Seat Angle
37.0 degrees 2nd end
Seat Angle
60.0 degrees 1st end
Opening Pressure Setting
975.0 pounds per square inch
Outside Diameter Tube Accommodated
0.250 inches 1st end
Outside Diameter Tube Accommodated
0.250 inches 2nd end
Material
Aluminum alloy 2024 flow control device and plastic polytetrafluoroethylene flow control device
Material
Aluminum alloy 2024 seat
Material
Aluminum alloy 2024 body
Material Specification
Qq-a-225/6 federal specification 1st material response flow control device
Material Specification
Qq-a-225/6 federal specification single material response body
Material Specification
Qq-a-225/6 federal specification single material response seat
Surface Treatment
Anodize
Thread Series Designator
Unf 1st end
Thread Series Designator
Unf 2nd end
NSN
4820-00-812-6231
Part Number
5120A4TB975
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 5120A4TB975 NSN 4820-00-812-6231

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:
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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