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

Safety Relief Valve

Model / MPN: 559A-1M-11 | NSN: 4820-00-913-2754
ITAR Registered seal

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.

Product Details
NATO Stock Number
4820-00-913-2754
Sold in multiples of
1 EA
DEMIL
NO
Pipe Size Accommodated
0.125 inches 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
-40.0 degrees fahrenheit 1st response250.0 degrees fahrenheit 2nd response
Connection Style
G46b plain (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st end
Features Provided
Valve stem lock shield and pressure tight outlet side
Maximum Operating Pressure
200.0 pounds per square inch single response
Thread Size
0.125 inches 1st end
Opening Pressure Setting
11.0 pounds per square inch
Material
Aluminum alloy 2024 seat
Material
Aluminum alloy flow control device and rubber butadiene-acrylonitrile class nbr flow control device
Material
Aluminum alloy 2024 body
Material Specification
5005, h36 mfr ref 1st material response flow control device
Material Specification
Qq-a-225/6, alloy2024, t4 federal specification single material response body
Material Specification
Qq-a-225/6, alloy2024, t4 federal specification single material response seat
Media For Which Designed
Refrigerant 12 4th response
Media For Which Designed
Acetylene 2nd response
Media For Which Designed
Air 1st response
Media For Which Designed
Ammonia, gaseous 3rd response
Media For Which Designed
Hydrogen 5th response
Surface Treatment
Anodize
Thread Series Designator
Npt 1st end
559A Series Parts
Solicitations
Solicitation Description Qty UOM Close Date
SPE7M020T3136 Valve, Safety Relief 1 EA 01/02/2020

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559A-1M-11 Cross Reference