U401-A Solenoid Valve
The flow control valve has been tested and granted Ex approval.The Ex-approval is EX m II T4.Ex certificate number is CE021037.
Materials:
Body: Die cast aluminum alloy
Technical Specifications:
Power:AC220 V,2×4W
Current Consumption: big flow valve 18mA, small flow valve 18mA
Allow flow rate:65L/min,big flow rate:50L/min,small flow rate:5L/min.
Working pressure:0.035-0.035MPa
Environmental Condition: -40~~+70degree
Features:
A high advantage in reliability and adaptability.
Housing: Die cast aluminum alloy.
Dual flow control valves have three grades of big flow, small flow and close.
The fuel resistant cable can be customized regarding length.
100% Factory Tested.
Wiring:
Color Link
Brown communal terminal
Black big flow rate
white small flow rate
Yellow/green ground
Package:
Product ID Weight Dimension
U401-A 2.1kg/case of 130 ×116× 80mm/case of 1
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lives. Each carbon ratio represents a different parent star. The
diamonds, by contrast, are thought to be the products of supernova explosions. Again, many carbon ratios
are known, each from a different supernova. Dozens, if not hundreds, of red giants and supernovas seem
to have contributed to the primitive solar nebula. Unfortunately, the grains fuel dispenser examined do not carry the sort
of isotopes that would allow them to be dated.
Nevertheless, other isotopes suggest a sup fuel dispenser ernova did go off just as the solar nebula was forming. That is
because meteorites contain a lot more of an isotope called magnesium-26 than would be expected.
Magnesium-26 is the decay product of aluminium-26. And aluminium-26 is produced in supernovas.
Whether this supernova somehow triggered the collapse of the primitive solar nebula and thus the
formation of Earth is not clear (though the theory was popular in the 1950s, before the evidence for
aluminium-26 was found). But meteorites can certainly illuminate the processes that formed the planets.
That is because, among the 10% that are not chondrites, there is a group that is composed almost
entirely of metal.
The metal in question is an alloy of iron and nickel. Or, rather, it is two alloys that have different ratios of
the two metals. These alloys are called kamacite and taenite, and when cut, polished and etched with acid
they produce an attractive criss-cross called a Widmanstätten pattern. But the really attractive thing about
metallic meteorites, from a scientific point of view, is that they provide the best evidence available of what
Earth s interior is like.
The fuel dispenser process of planetary formation, as deduced from meteorites and confirmed as plausible by computer
models, went like this. First, dust particles clumped together to form cosmic dustballs. Bursts of heat from
the primitive sun melted the dustballs, which solidified into chondrules. Local concentrations of chondrules
were drawn together by gravity and, when they encountered each other, often merged. Once a
