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12-23-15, 08:20 PM
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#11 |
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Journeyman EcoRenovator
Join Date: Apr 2015
Location: Oxford, MS USA
Posts: 496
Thanks: 69
Thanked 87 Times in 61 Posts
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Bi-directional flow txvs. Why do I need check valves if these can flow backwards?
I saw a unit today that did heating and cooling. Not a single check valve in the system. Not even a bypass loop or anything. Are most txvs bi-directional?
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שְׁמַע יִשְׂרָאֵל ה' אֱלֹהֵינוּ ה' אֶחָד |
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