257AH

Fluid Pressure Regulating Valve

NSN 4820-00-171-9817

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
N/A
UOM:
1 EA
NIIN:
001719817

Technical Specifications of NSN

Body Material:
Brass
Body Style:
Straight thru
Furnished Items:
Cylinder gage and delivery gage
Media For Which Designed:
Oxygen, gaseous
First End Connection Type:
Threaded external tube
First End Style Designator:
Inverted flare
First End Outside Diameter Tube Accommodated:
0.375 inches
First End Thread Size And Series/type Designator:
9/16-18 unf
First End Thread Class:
2a
First End Thread Direction:
Right-hand
Second End Relationship With First End:
Not identical
Second End Connection Type:
Threaded internal gas cylinder
Second End Style Designator:
Swivel nut, gas
Second End Thread Size And Series/type Designator:
0.908-14 ngo
Second End Thread Direction:
Right-hand
First End Seat Angle In Deg:
30.0
Second End Seat Radius:
0.281 inches
Flow Control Device:
Disk, bottom guided
End Connection Quantity:
2
Second End Thread Pitch Diameters:
+0.8616 to 0.8652 inches
Outlet Pressure Range:
+0.0 to 100.0 pounds per square inch
Regulation Type:
1st stage manual, 2nd stage automatic
Manual Control Method:
Tee handle
Valve Loading Method:
Spring
Maximum Inlet Pressure Rating:
3000.0 pounds per square inch
Filter:
Included
Nondefinitive Specification/std Data:
2 type and ow2 class
Departure From Cited Designator:
As modified by the dial range
NSN:
4820-00-171-9817
Item Name:
Valve,main
Cage Code:
14011

Other Related Parts

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
MILR19180
Cage Code:
81349
RNCC:
4
RNVC:
1
RNAAC:
AX
Status:
A
MSDS:
SADC:
Part Number:
SVTS252AH
Cage Code:
14011
RNCC:
3
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
7782411
Cage Code:
19204
RNCC:
5
RNVC:
2
RNAAC:
BF
Status:
A
MSDS:
SADC:
Part Number:
MILR19180
Cage Code:
81349
RNCC:
4
RNVC:
1
RNAAC:
AX
Status:
A
MSDS:
SADC:
Part Number:
SVTS252AH
Cage Code:
14011
RNCC:
3
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
7782411
Cage Code:
19204
RNCC:
5
RNVC:
2
RNAAC:
BF
Status:
A
MSDS:
SADC:
Part Number:
MILR19180
Cage Code:
81349
RNCC:
4
RNVC:
1
RNAAC:
AX
Status:
A
MSDS:
SADC:
Part Number:
SVTS252AH
Cage Code:
14011
RNCC:
3
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
7782411
Cage Code:
19204
RNCC:
5
RNVC:
2
RNAAC:
BF
Status:
A
MSDS:
SADC:
Part Number:
MILR19180
Cage Code:
81349
RNCC:
4
RNVC:
1
RNAAC:
AX
Status:
A
MSDS:
SADC:
Part Number:
SVTS252AH
Cage Code:
14011
RNCC:
3
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
7782411
Cage Code:
19204
RNCC:
5
RNVC:
2
RNAAC:
BF
Status:
A
MSDS:
SADC:
Part Number:
MILR19180
Cage Code:
81349
RNCC:
4
RNVC:
1
RNAAC:
AX
Status:
A
MSDS:
SADC:
Part Number:
SVTS252AH
Cage Code:
14011
RNCC:
3
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
7782411
Cage Code:
19204
RNCC:
5
RNVC:
2
RNAAC:
BF
Status:
A
MSDS:
SADC:
Part Number:
MILR19180
Cage Code:
81349
RNCC:
4
RNVC:
1
RNAAC:
AX
Status:
A
MSDS:
SADC:
Part Number:
SVTS252AH
Cage Code:
14011
RNCC:
3
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
7782411
Cage Code:
19204
RNCC:
5
RNVC:
2
RNAAC:
BF
Status:
A
MSDS:
SADC:

Part Identification

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

Part Materials

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:
5.0000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
A
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:
Trailers/Vehicles

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Privacy | Terms

Definition Definition of approved item name (AIN): "Main Valve"

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.

MOE Major Organizational Entities

Entity
DSOR
User:
DEPARTMENT OF THE NAVY Dept. of the Navy
DSOR:
User:
U.S. COAST GUARD U.s. Coast Guard
DSOR:
User:
BRAZIL Brazil
DSOR:
User:
SPAIN Spain
DSOR:
User:
REPUBLIC OF KOREA Republic of Korea
DSOR:
User:
GREECE Greece
DSOR:
User:
TURKEY Turkey
DSOR:
Import / Export
  • Schedule B: 8481809015
  • SITC: 74780
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

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


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