Model: 628

Safety Relief Valve

Properties:

Thread Class
3b 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Renewable Seat Ring Type
Pressed-in
Connection Style
G4 gasket sea (boss) 1st end
Connection Style
Gasket sea (boss) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded internal boss 1st end
Features Provided
Bonnet packing
Thready Qty Per Inch (tpi)
20 1st end
Adjustable Pressure Range
+1000.0/+4100.0 pounds per square inch
Thread Size
0.437 inches 1st end
Material
Aluminum alloy body
Material
Steel seat
Material
Steel stem
Surface Treatment
Anodize
Style Designator
Angle
Thread Series Designator
Unf 1st end
NSN
4820-00-486-6043
Part Number
628
Description
Valve,safety Relief
CAGE
72139

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 628 NSN 4820-00-486-6043

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:
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:
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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