Model: 2694

Check Valve

Special Features:

Weapon system essential

Properties:

Thread Class
3a all ends
Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
-65.0 degrees fahrenheit 1st response
Maximum Operating Temp
180.0 degrees fahrenheit 2nd response
End Application
Helicopter, advance attack, ah-1w; helicopter, cobra/attack, ah-1j
Connection Style
Flared (tube) all ends
Valve Operation Method
Automatic
Connection Type
Threaded external tube all ends
Mounting Position
Horizontal or vertical
Thready Qty Per Inch (tpi)
14 1st end
Maximum Operating Pressure
600.0 pounds per square inch single response
Thread Size
0.875 inches all ends
Seat Angle
37.0 degrees 1st end
Criticality Code Justification
Feat
Opening Pressure Setting
18.0 pounds per square inch
Outside Diameter Tube Accommodated
0.625 inches 1st end
Material
Aluminum alloy 2024 seat
Material
Aluminum alloy 2024 body
Material Specification
Qq-a-225/6 federal specification single material response body
Material Specification
Qq-a-225/6 federal specification single material response seat
Media For Which Designed
Air 1st response
Media For Which Designed
Alcohol, ethyl 5th response
Media For Which Designed
Carbon dioxide 3rd response
Media For Which Designed
Ethylene glycol 4th response
Media For Which Designed
Fuel/oil, hydrocarbon 2nd response
Style Designator
Straight thru
Thread Series Designator
Unjf all ends
NSN
4820-00-241-0634
Part Number
2694
Description
Valve,check
CAGE
99473

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 2694 NSN 4820-00-241-0634

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:
SX
CRITL:
Y

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.5000lbs
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:
127220
UFC:
64490
LTL:
77.5
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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