Model: 3120-350

Safety Relief Valve

Properties:

Pipe Size Accommodated
0.500 inches 2nd end
Thread Class
3a 1st end
Thread Direction
Right-hand 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Disk
Bonnet Type
Inside screw
Bonnet Attachment Method
Integral
Disk Loading Method
Spring
Valve Discharge Flow Rate
302.0 cubic feet per minute
Connection Style
G42 flared (tube) 1st end
Connection Style
G46b plain (pipe) 2nd end
Connection Style
Flared (tube) 1st end
Connection Style
Plain (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 2nd end
Connection Type
Threaded external tube 1st end
Thread Size
0.500 inches 2nd end
Thread Size
0.875 inches 1st end
Seat Angle
37.0 degrees 1st end
Opening Pressure Setting
300.0 pounds per square inch
Outside Diameter Tube Accommodated
0.625 inches 1st end
Material
Copper alloy body
Material
Stainless steel seat
Style Designator
Angle
Thread Series Designator
Nptf 2nd end
Thread Series Designator
Unf 1st end
NSN
4820-00-454-1087
Part Number
3120-350
Description
Valve,safety Relief
CAGE
58553

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 3120-350 NSN 4820-00-454-1087

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:
576
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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