Model: 571973

Safety Relief Valve

Properties:

Thread Class
2a 4th end
Thread Class
2b 2nd end
Thread Class
2b 3rd end
Thread Class
2b 1st end
Thread Direction
Right-hand 2nd end
Thread Direction
Right-hand 1st end
Thread Direction
Right-hand 3rd end
Thread Direction
Right-hand 4th end
Flow Control Device
Poppet
Disk Loading Method
Spring
Renewable Seat Ring Type
Bonded
Connection Style
G4 gasket sea (boss) 2nd end
Connection Style
G53 double threaded section boss fitting gasket with locknut sealing (boss) 4th end
Connection Style
G5a flar (tube) 1st end
Connection Style
Double threaded section boss fitting gasket with locknut sealing (boss) 4th end
Connection Style
Flar (tube) 1st end
Connection Style
Gasket sea (boss) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external boss 4th end
Connection Type
Threaded internal boss 2nd end
Connection Type
Threaded internal boss 3rd end
Connection Type
Threaded internal tube 1st end
Mounting Facility
Bracket
Thread Size
0.437 inches 3rd end
Thread Size
0.437 inches 2nd end
Thread Size
0.750 inches 1st end
Thread Size
0.875 inches 4th end
Outside Diameter Tube Accommodated
0.500 inches 1st end
Material
Aluminum body
Material
Steel flow control device
Material
Steel seat
Surface Treatment
Anodize
Style Designator
C1 angle
Style Designator
Angle
Thread Series Designator
Unf 1st end
Thread Series Designator
Unf 3rd end
Thread Series Designator
Unf 2nd end
Thread Series Designator
Unf 4th end
NSN
4820-00-040-3134
Part Number
571973
Description
Valve,safety Relief
CAGE
31322

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 571973 NSN 4820-00-040-3134

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.7000lbs
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:
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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