Model: 1857005-1

Safety Relief Valve

Properties:

Thread Class
2b 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Valve Discharge Flow Rate
0.3 gallons per minute
End Application
Manifold, hydraulic fluid stabilizer 1890576 onboard 270 ft wmec class coast guard vessels
Connection Style
G50 external seat for gasket seal (boss) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external boss 1st end
Adjustable Pressure Range
+1000.0/+6000.0 pounds per square inch
Maximum Operating Pressure
6000.0 pounds per square inch single response
Thread Size
0.750 inches 1st end
Material
Rubber packing
Material
Steel body
Material
Steel flow control device
Material
Steel seat
Media For Which Designed
Hydraulic fluid, petroleum base single response
Thread Series Designator
Unf 1st end
NSN
4820-01-104-3346
Part Number
1857005-1
Description
Valve,safety Relief
CAGE
03956

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 1857005-1 NSN 4820-01-104-3346

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:
CRITL:
X

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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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