Model: L81400-20FMK

Check Valve

Properties:

Flow Control Device
Poppet
Disk Loading Method
Spring
Bolt Hole Quantity
4 2nd end
Maximum Operating Temp
400.0 degrees fahrenheit single response
Connection Style
Plain (tube) 1st end
Width
2.188 inches 2nd end
Length
2.188 inches 2nd end
Valve Operation Method
Automatic
Flange Shape
Rectangular with holes 2nd end
Connection Type
Flange 2nd end
Connection Type
Unthreaded external tube 1st end
Mounting Position
Horizontal
Maximum Operating Pressure
400.0 pounds per square inch single response
Thickness
0.300 inches 2nd end
Bolt Hole Diameter
2.500 inches 2nd end
Center To Center Distance Between Bolt Holes Along Length
1.656 inches 2nd end
Center To Center Distance Between Bolt Holes Along Width
1.656 inches 1st end
Flange Face Design
Plain 2nd end
Outside Diameter Tube Accommodated
1.520 inches 1st end
Material
Aluminum alloy 2024 flow control device
Material
Aluminum alloy 6061 body
Material
Rubber seat
Material Specification
Mil-r-25897, type 1, class 1 military specification single material response seat
Material Specification
Qq-a-200/3, alloy 2024, t4 federal specification single material response flow control device
Material Specification
Qq-a-225/8, alloy 6061, t651 federal specification single material response body
Media For Which Designed
Air 1st response
Media For Which Designed
Fuel/oil, hydrocarbon 2nd response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625 military specification single treatment response
Style Designator
Straight thru
NSN
4820-01-059-1173
Part Number
L81400-20FMK
Description
Valve,check
CAGE
01178

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 L81400-20FMK NSN 4820-01-059-1173

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:
0.2000lbs
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:
050855
UFC:
29290
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 8481309000
  • SITC: 74730
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Check valves of materials other than copper, iron or steel

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