Model: 1983-1

Safety Relief Valve

Properties:

Thread Direction
Right-hand 1st end
Disk Loading Method
Spring
Valve Discharge Flow Rate
40.0 gallons per minute
Maximum Operating Temp
275.0 degrees fahrenheit single response
Connection Type
Threaded external tube 1st end
Connection Type
Unthreaded external tube 2nd end
Thready Qty Per Inch (tpi)
12 1st end
Maximum Operating Pressure
175.0 pounds per square inch single response
Thread Size
1.500 inches 1st end
Seat Angle
37.0 degrees 1st end
Opening Pressure Setting
135.0 pounds per square inch
Outside Diameter Tube Accommodated
0.625 inches 1st end
Outside Diameter Tube Accommodated
0.750 inches 2nd end
Material
Aluminum alloy body
Material
Aluminum alloy seat
Media For Which Designed
Hydraulic fluid, phosphate-ester base single response
Thread Series Designator
Un 1st end
NSN
4820-00-912-6842
Part Number
1983-1
Description
Valve,safety Relief
CAGE
06177

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 1983-1 NSN 4820-00-912-6842

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:
SX
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:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
60.0
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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