Model: WHMB300571AA

Air Pressure Relay Valve

Special Features:

Used on retrofitted anti-lock brakes on 5 ton trucks; next higher assembly m939, m939a1 and m939a2

Properties:

Body Style
Multiple cionnection
Media For Which Designed
Air
First End Connection Type
Threaded internal pipe
First End Pipe Size Accommodated
0.500 inches
First End Thread Direction
Right-hand
Second End Relationship With First End
Not identical
Second End Connection Type
Threaded internal pipe
Second End Pipe Size Accommodated
0.375 inches
Second End Thread Direction
Right-hand
Third End Relationship With Preceding Ends
Identical with second end
Third End Pipe Size Accommodated
0.375 inches
Fourth End Relationship With Preceding Ends
Identical with second end
Fourth End Pipe Size Accommodated
0.375 inches
End Connection Quantity
4
End Application
2320-01-206-4089, truck, cargo; w/s 5 ton truck
First End Thread Series Designator
Nptf
First End Thread Size
0.500 inches
Second End Thread Series Designator
Nptf
Part Name Assigned By Controlling Agency
Valve, modal, 24v
NSN
2530-01-478-4176
Part Number
WHMB300571AA
Description
Valve,relay,air Pressure
CAGE
0UKB6

A valve specifically designed for installation in an air brake system. It is used on trailers, long wheel base vehicles, as well as multiple rear axle vehicles. It serves to speed and synchronize the application and release of air operated service or parking brakes. It may include emergency features for trailer application.

Part WHMB300571AA NSN 2530-01-478-4176

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
36296
FIIG:
A07100
Concept No.:
1
App. Key:
AT
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:
P
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
3.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
127220
UFC:
64490
LTL:
77.5
LCL:
77.5
WCC:
885
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8481809050
  • SITC: 74780
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Other taps, cocks, valves, etc., nesoi

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