Automatic Flow Limiting Valve?

What is an Automatic Flow Limiting Valve? In a hydronic heating system, overflow can cause overheating, since the additional flow will cause additional heat transfer at the coil. The control valve should sense this based on leaving airside temperature of the coil, and modulate to keep the flow rate in line with the required heat…

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Determine Pump Flow

How to Determine Pump Flow All Bell & Gossett Pumps have tappings in the suction and discharge of the pump volutes. These tappings are used for a number of purposes, not the least of which is to help determine how much water is flowing in the system. The best way to determine flow rate in…

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Test Your Hydronics IQ

I hope that people come to this site every month to pick-up some useful tips and design ideas.  This month I thought it might be fun to test our “Hydronics I.Q.”.  Of course, this is just for fun and there are a variety of styles of questions for your consideration.  Also, I have addressed all…

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Bell & Gossett’s TechnoForce e-HV

The TechnoForce e-HV by Bell & Gossett, a Xylem brand, is a pre-engineered pressure booster package, and the newest addition to B&G’s POWER OF e portfolio. These compact, multipump packages offer highly efficient variable speed solutions and industry-leading hydraulic performance when additional potable water pressure and flow is required. The e-HV is ideal for a…

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Integrated Residential Heating Controls

This article focuses specifically on how integrated controls make a hydronic HVAC system more efficient. One of the most basic and common systems is a boiler outdoor air reset control. This type of control looks at the outside air temperature and adjusts, or ‘resets’ the boiler water temperature accordingly. The idea here is that is…

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Metraflex Introducing new Magnetohydrodynamic Drive (MHD) Pump

New, patent-pending “silent” pump eliminates noise, vibration and fluid turbulence The Metraflex Company is revolutionizing the commercial plumbing/HVAC industry with a new, patent-pending Magnetohydrodynamic Drive (MHD) pump for engineered piping systems. The new MetraPump™ technology eliminates all moving parts in a pump, reducing its operation to a whisper. The MHD is silent, produces no vibration…

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BORNQUIST REP OF THE YEAR

“We’ve been located in this building since the mid-1960s, although we’ve expanded several times since then,” Mike Hultgren, Bornquist Inc. president, says when asked about the company’s history of residences. On the surface, this statement makes it clear that Bornquist has planted deep roots in the HVAC, plumbing and other industries it serves from its headquarters…

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