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Worldwide distributor of NSN parts and consumables located in the USA.

Check Valve

Model / MPN: 920B-1-15 | NSN: 4820-01-274-0300
ITAR Registered seal

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.

Product Details
NATO Stock Number
4820-01-274-0300
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
3a 1st end
Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Maximum Operating Temp
-40.0 degrees fahrenheit 1st response
Maximum Operating Temp
300.0 degrees fahrenheit 2nd response
Connection Style
Flared (tube) 1st end
Connection Style
Plain, optional end (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external tube 1st end
Connection Type
Threaded internal pipe 2nd end
Mounting Position
Horizontal or vertical
Thready Qty Per Inch (tpi)
12 1st end
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
1.250 inches 2nd end
Thread Size
1.625 inches 1st end
Seat Angle
37.0 degrees 1st end
Material
Copper alloy body
Media For Which Designed
Water, fresh 3rd response
Media For Which Designed
Air 2nd response
Media For Which Designed
Oil, hydraulic 1st response
Style Designator
Straight thru
Supplementary Features
Additional flow control device: dilating o-ring
Thread Series Designator
Npt 2nd end
Thread Series Designator
Un 1st end

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920B-1-15 Cross Reference