Model: N857

Fluid Pressure Regulating Valve

Properties:

Body Material
Bronze
Body Style
Straight thru
Stem Material
Steel, ams 5643
Furnished Items
Adapter and tailpiece and needle valve and wrench
Media For Which Designed
Oxygen, gaseous
First End Connection Type
Unthreaded internal pipe
First End Style Designator
Streamlined with two brazing rings
First End Pipe Size Accommodated
0.500 inches
Second End Relationship With First End
Identical
Seat Material
Nickel copper alloy, qq-n-281
Flow Control Device
Needle
Flow Control Device Material
Steel, ams 5643
End Connection Quantity
2
Renewable Seat Ring Type
Pressed-in
Outlet Pressure Range
+5.0/+1500.0 pounds per square inch
Regulation Type
Automatic single stage
Valve Stem Design
Single seat
Valve Loading Method
Dome
Maximum Inlet Pressure Rating
3000.0 pounds per square inch
NSN
4820-00-913-8749
Part Number
N857
Description
Valve,regulating,fluid Pressure
CAGE
26505

A valve designed to automatically maintain within close limits a predetermined outlet pressure which may be adjustable within a specified range regardless of the higher fluctuating or constant inlet pressure. It is designed for use with compressed gas(es) and various liquids and may include gauges. It may be inline or cartridge (manifold) design. Excludes regulator, pressure, medical gas administration apparatus; regulator, oxygen, barometric continuous flow; regulator, oxygen demand; regulator, oxygen diluter demand; and valve(1), fluid pressure regulating, aircraft.

Part N857 NSN 4820-00-913-8749

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
27565
FIIG:
A21100
Concept No.:
1
App. Key:
D
Cond. Code:
2
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:
C

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
11.0 X 9.5 X 7.0
Paclk Weight:
25.0000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
A
SPI No.:
SPI Rev.:
SPC Mkg:
24
LVL_A:
E
LVL_B:
F

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8481809015
  • SITC: 74780
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Regulator valves, self-operating, for controlling variables such as temperature, pressure, flow and liquid level

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