
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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by Peter Webster, Judith Curry and
colleagues, said the data supported the idea that there was a long-term increase in the number of
category four and five (intense) hurricanes; the other, by Kerry Emanuel, professor of tropical
meteorology and climate at MIT, suggested that the intensity of Atlantic storms had on average doubled
over 30 years.
The Webster paper was a surprise, but Professor Emanuel s came as a real shock. He is a big noise in the
hurricane world and had been a supporter of the AMO. “Initially,�he says, “I was very enamoured of the
idea of natural cycles. But we ve gone back to look at the data, and what you see is anything but a
natural cycle.�
Oscillating theories
Hurricanes are closely related to sea-surface temperatures. These rose during the first half of the 20th
century, then fell back, then started rising again in the 1970s. Hurricane activity followed the same
pattern, which prompted the idea of the oscillation. But Professor Emanuel now believes that what looked
like an oscillation is, in fact, a long-term trend, masked in the 1950s-70s by an increase in atmospheric
pollution by particles such as sulphur that led to a period of global cooling. Now that sulphur levels have
been reduced, atmospheric temperatures are on their way up again—and so are sea-surface
temper fuel dispenser atures and hurricane activity.
Not everybody agrees. Bill Gray, a professor of meteorology at Colorado State University, who runs a
hurricane-forecasting centre and is the man America always turns to when a big hurricane threatens,
doubts the methods of the climatologists. “I m a great believ fuel dispenser er in computer models,�he told the 27th
Conference on Tropical Meteorology earlier this year. “I am—out to ten or 12 days. But when you get to
the climate scale, you get into a can of worms. Any climate person who believes in a model should have
their head examined.�
But mostly the hurricane world has come round to the view that AP
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