Model: 622B2-1/4-28

Safety Relief Valve

Properties:

Pipe Size Accommodated
0.250 inches all ends
Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Maximum Operating Temp
400.0 degrees fahrenheit single response
End Application
Grumman aircraft model a10
Connection Style
G9 plain, optional en (pipe) all ends
Connection Style
Plain, optional en (pipe) all ends
Valve Operation Method
Automatic
Connection Type
Threaded internal pipe all ends
Features Provided
Pressure tight outlet side
Thready Qty Per Inch (tpi)
18 all ends
Adjustable Pressure Range
+10.0 to 50.0 pounds per square inch
Maximum Operating Pressure
50.0 pounds per square inch single response
Thread Size
0.250 inches all ends
Opening Pressure Setting
35.0 pounds per square inch
Material
Aluminum alloy body
Material
Aluminum alloy seat
Material
Rubber fluorocarbon class fpm packing
Material
Steel comp 416 flow control device
Material Specification
Fedstd66, aisi416/sae51416 military specification single material response flow control device
Material Specification
Mil-r-83248/1 military specification single material response packing
Media For Which Designed
Fuel/oil, hydrocarbon 1st response
Media For Which Designed
Hydraulic fluid, silicate-ester base 2nd response
Surface Treatment
Anodize
Style Designator
C1 angle
Style Designator
Angle
Thread Series Designator
Npt all ends
NSN
4820-00-040-7472
Part Number
622B2-1/4-28
Description
Valve,safety Relief
CAGE
09990

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 622B2-1/4-28 NSN 4820-00-040-7472

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:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.3000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051080
UFC:
29300
LTL:
RATING VARIABLE
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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