Model: 437937-1

Safety Relief Valve

Properties:

Thread Class
3a 2nd end
Thread Class
3b 1st end
Thread Direction
Right-hand 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Connection Style
G42 flared (tube) 2nd end
Connection Style
Flared (tube) 2nd end
Connection Style
Swivel nut, flar (tube) 1st 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)
16 1st end
Thready Qty Per Inch (tpi)
16 2nd end
Thread Size
0.750 inches 1st end
Thread Size
0.750 inches 2nd end
Seat Angle
37.0 degrees 1st end
Seat Angle
37.0 degrees 2nd end
Opening Pressure Setting
0.288 pounds per square inch
Outside Diameter Tube Accommodated
0.500 inches 1st end
Outside Diameter Tube Accommodated
0.500 inches 2nd end
Material
Aluminum alloy 2024
Material Specification
Qq-a-225/6, alloy2024 federal specification single material response flow control device
Style Designator
Straight thru
Thread Series Designator
Unf 1st end
Thread Series Designator
Unf 2nd end
NSN
4820-00-060-6445
Part Number
437937-1
Description
Valve,safety Relief
CAGE
37695

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 437937-1 NSN 4820-00-060-6445

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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