Model: 289U

Safety Relief Valve

Properties:

Pipe Size Accommodated
0.250 inches all ends
Thread Direction
Right-hand all ends
Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Connection Style
G9 plain, optional en (pipe) all ends
Valve Operation Method
Automatic
Connection Type
Threaded internal pipe all ends
Features Provided
Valve stem lock shield and pressure tight outlet side
Thready Qty Per Inch (tpi)
18 all ends
Thread Size
0.250 inches all ends
Opening Pressure Setting
1.000 pounds per square inch
Material
Aluminum alloy body
Material
Aluminum alloy flow control device
Material
Aluminum alloy seat
Surface Treatment
Anodize
Thread Series Designator
Npt all ends
NSN
4820-00-841-8600
Part Number
289U
Description
Valve,safety Relief
CAGE
22508

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 289U NSN 4820-00-841-8600

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

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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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