Model: 991708

Check Valve

Properties:

Thread Class
2b 1st end
Thread Direction
Right-hand 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Ball
Disk Loading Method
Spring
Connection Style
Inverted flare (tube) 1st end
Connection Style
Plain (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 2nd end
Connection Type
Threaded internal tube 1st end
Mounting Position
Horizontal or vertical
Thread Size
0.375 inches 2nd end
Thread Size
0.500 inches 1st end
Seat Angle
42.0 degrees 1st end
Outside Diameter Tube Accommodated
0.312 inches 1st end
Material
Steel
Style Designator
Straight thru
Thread Series Designator
Npt 2nd end
Thread Series Designator
Unf 1st end
NSN
4820-01-021-6196
Part Number
991708
Description
Valve,check
CAGE
89749

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

Part 991708 NSN 4820-01-021-6196

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05487
FIIG:
A530B0
Concept No.:
1
App. Key:
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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
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:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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