Model: P50-691

Check Valve

Properties:

Thread Class
3a 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
160.0 degrees fahrenheit single response
Connection Style
Flared (tube) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external tube 1st end
Mounting Position
Horizontal or vertical
Thready Qty Per Inch (tpi)
20 1st end
Maximum Operating Pressure
50.0 pounds per square inch single response
Thread Size
0.438 inches 1st end
Seat Angle
37.0 degrees 1st end
Outside Diameter Tube Accommodated
0.250 inches 1st end
Material
Aluminum alloy
Media For Which Designed
Fuel/oil, hydrocarbon single response
Style Designator
Straight thru
Thread Series Designator
Unf 1st end
NSN
4820-00-518-3996
Part Number
P50-691
Description
Valve,check
CAGE

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 P50-691 NSN 4820-00-518-3996

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:
127220
UFC:
64490
LTL:
77.5
LCL:
77.5
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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