I don't like these gauges my main issue is that there is no way to hook the other end of the hoses so basically the hoses that it are not in use have to hang in the dirt. They also have plastic o-rings that leak, they should be rubber. Also because of the plastic o-rings the hoses don't even hold tight, in HVAC the hoses have to be tight or it's useless. The manifold itself appears to be half drained, although I haven't tried them in the field yet. If I didn't need the sensors I would send them back for a refund.
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