Model: 174A

Safety Relief Valve

Properties:

Pipe Size Accommodated
1.000 inches all ends
Thread Direction
Right-hand all ends
Flow Control Device
Disk
Bonnet Type
Inside screw
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Connection Style
G9 plain, optional en (pipe) all ends
Connection Style
Plain, optional en (pipe) all ends
Valve Operation Method
Manual
Connection Type
Threaded internal pipe all ends
Features Provided
Valve stem lock shield
Thread Size
1.000 inches all ends
Opening Pressure Setting
75.0 pounds per square inch
Material
Copper alloy
Style Designator
Angle
Thread Series Designator
Npt 1st end
Reference Number Differentiating Characteristics
As differentiated by pressure setting and size
NSN
4820-00-057-7231
Part Number
174A
Description
Valve,safety Relief
CAGE

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 174A NSN 4820-00-057-7231

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:
2.1000lbs
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:
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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