Model: 578R946H01

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
End Application
An/alq-119
Connection Style
G4 gasket sea (boss) 1st end
Connection Style
G50 external seat for gasket seal (boss) 2nd end
Connection Style
External seat for gasket seal (boss) 2nd end
Connection Style
Gasket sea (boss) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external boss 2nd end
Connection Type
Threaded internal boss 1st end
Features Provided
Pressure tight outlet side
Thready Qty Per Inch (tpi)
20 1st end
Thready Qty Per Inch (tpi)
20 2nd end
Thread Size
0.437 inches 1st end
Thread Size
0.438 inches 2nd end
Opening Pressure Setting
37.0 pounds per square inch
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response
Style Designator
Straight thru
Thread Series Designator
Unf 2nd end
Thread Series Designator
Unjf 1st end
NSN
4820-00-090-6411
Part Number
578R946H01
Description
Valve,safety Relief
CAGE
97942

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 578R946H01 NSN 4820-00-090-6411

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:
EW
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
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:
--
WCC:
594
TCC:
Z
SHC:
Z
ACC:
Equipment for Aircraft

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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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