How safe is the 1074/2 outletbox when it comes to sucking in air? Does it suffer from the same issues as other overflowboxes that stop working when they suck in air, or do the submerged pipe prevent the problems? (sorry...this is probably BAD english)
I have used them and only had them stop with air if the return pump runs dry and stops running because the sump got empty. In no other case have i ever had them lose siphon.
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(sorry...this is probably BAD english
)
