Model: 1749

Check Valve

Special Features:

Media requires a mixture of 67percent-ethylene and 33percent-water by volume; cartridge type

Properties:

Pipe Size Accommodated
0.311 inches 2nd end
Flow Control Device
Poppet
Maximum Operating Temp
131.0 degrees fahrenheit single response
Connection Style
Plain (pipe) 2nd end
Connection Style
Plain (tube) 1st end
Valve Operation Method
Automatic
Connection Type
Unthreaded external pipe 2nd end
Connection Type
Unthreaded external tube 1st end
Mounting Position
Horizontal
Maximum Operating Pressure
3000.0 pounds per square inch single response
Outside Diameter Tube Accommodated
0.172 inches 1st end
Material
Plastic polypropylene packing
Material
Steel comp 303 body
Media For Which Designed
Water, fresh 2nd response
Media For Which Designed
Ethylene glycol 1st response
Style Designator
Straight thru
NSN
4820-01-250-4121
Part Number
1749
Description
Valve,check
CAGE
96948

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 1749 NSN 4820-01-250-4121

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:
A
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:
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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