HVAC Tool Review - Milwaukee M18 Transfer Pump Kit With Nathan Orr

HVAC Tool Review – Milwaukee M18 Transfer Pump Kit With Nathan Orr

May 2, 2018

In this video, Nathan for Kalos Services & HVAC School shares his thoughts and overall opinion about the Milwaukee M18 Transfer Pump.

A transfer pump is great for water transfers, such as emptying out drain pans and lines. In our test, the Milwaukee M18 pump took 2 1/2 minutes to transfer 3 gallons of water. So, Nathan thinks the tool is worth the investment and will save time on jobs that require water transfer.

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In this short podcast episode, Bryan answers a listener-submitted question about double flares and their application in the HVAC/R industry.

Flare connections are common in certain types of equipment, and they connect the copper to the appliance. As a result, when we make a flare, our goal is to make it leak-free. A regular flare requires you to cut the copper, clean it, put the flare nut on, and make the flare with a flaring block (or a flaring tool). You can also put a little bit of oil on the flare cone to prevent galling. Modern power flaring tools are common nowadays, especially in markets where we install a lot of mini-splits. We also use torque wrenches to tighten the flare connection according to the manufacturer’s specs.

In mission-critical applications where we have toxic or flammable refrigerants under high pressure, we especially want leak-free connections. Double flares make more sense in these scenarios for extra security (though we may use different connection types). A double flare requires you to use a double-flare die that flares over the edge, though those double-flare dies are more common in older flaring kits and may not exist for power tools or spin tools.

Double flares are usually less practical than other alternatives that exist on the market. For example, some manufacturers make flare gaskets to reduce the likelihood of leaks, and these are functionally similar to a double flare.

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