Proactive Low Flow Control Valve

The disposable PVC low flow control valve is designed for use with Proactive stainless steel pumps.
Your Price $20.00
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Proactive Low Flow Control Valve
PA-14080
Disposable PVC low flow control valve
$20.00
2 Available
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In The News

Rounded pebbles give evidence of past flowing water on Mars

NASA's Curiosity rover has found pebbles that appear to have been rounded by streamflow, according to a release from University of California Davis. Experts say the finding represents the first on-site evidence of sustained flowing water on Mars. The rounded pebbles discovered are only known to form when transported through water over long distances. Their discovery supports theories that the red planet could once have supported life. The smooth rocks were found between the north rim of the planet’s Gale Crater and the base of Mount Sharp, a mountain inside the crater. Researchers say they chose Gale Crater for study because there was a sediment deposit there that typically requires water to form.

Study suggests small dams have more negative effects than large dams

A recent study suggests that small dams may have a greater impact on rivers than large dams, as they divert more water away from rivers, according to a press release from the American Geophysical Union. Researchers from Oregon State University studied China’s Nu River, which is home to a variety of dams in the river main stem and its tributaries.  In total, 31 small dams were evaluated and compared to four large dams in the main river stem. The research team compared dam impacts to habitat loss, river channel lengths, land affected and landslide risks among 14 total factors.  They found small dams had a greater negative impact in nine out of 14 categories. Small dams, used to divert water to hydropower stations, had some of the most profound impacts on rivers.

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Testing CO2 Removal Strategies in the Pacific Northwest

The ocean plays a key role in carbon dioxide (CO2) removal and storage, also known as carbon sequestration. However, with increasing emissions, a large amount of CO2 escapes into the atmosphere, worsening climate change and leading to increases in surface temperatures. In order to mitigate some of these impacts, researchers like Ally Savoie at the Pacific Northwest National Laboratory (PNNL) are working hard to identify ways to safely improve the CO2 removal and storage capabilities in the ocean. Savoie started her career at Wright State University , where she worked in Silvia Newell’s lab examining biogeochemical cycling of nutrients in a river system. From there, she decided to pursue a master’s in marine science at the University of Southern Mississippi with Dr.