Model: B422-1-B3

Stop-check Valve

Properties:

Pipe Size Accommodated
0.500 inches 1st end
Bonnet Type
Outside screw-yoke
Bonnet Attachment Method
Bolted
Connection Style
Socket (pipe) 1st end
Valve Operation Method
Manual
Connection Type
Unthreaded internal pipe 1st end
Mounting Position
Horizontal or vertical
Material
Steel body
Material
Stainless steel seat
Material
Steel stem
Style Designator
Straight thru
Supplementary Features
Flow control device: stem
Nondefinitive Specification/std Data
B1 composition and 1500.0 rating and 0.500 size
Departure From Cited Document
Quality control in accordance with navships 0948-045-7010 material identification and control instruction for level 1
NSN
4820-01-071-4649
Part Number
B422-1-B3
Description
Valve,stop-check
CAGE
11859

A valve with a bolt or stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first position, the valve disk is located and locked against the seat permitting no fluid flow through the valve. In the second position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. The valve disk may be spring loaded. It may be inline or cartridge (manifold) design. See also valve (1), lift-check and valve (1), stop-lift-check.

Part B422-1-B3 NSN 4820-01-071-4649

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05486
FIIG:
A530B0
Concept No.:
1
App. Key:
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:
S

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
11.0 X 5.0 X 5.0
Paclk Weight:
11.0000lbs
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: 8481302090
  • SITC: 74730
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Check valves of steel

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