First time owning a home with hot water heat, and studying the plumbing the basement, I notice that the living room/kitchen zone that has a run of baseboard, a kick panel unit, and several floor units, doesn't have them daisy chained as I expected, but each one is in parallel with the main loop. The attached photo shows the "drop" for one of the in-floor units.
Is this a typical practice when a zone has multiple drops?
I can see the benefit of this, in that each successive device doesn't lower the overall temperature as much as if they were "one out, two in" plumbed, and this also allows for more overall flow through the system rather than being restricted by the smaller devices, but it leaves me wondering how enough water goes through the individual devices, since it seems that it would be easier to keep flowing through the larger-diameter main loop than taking the 1/2" route through the baseboard or whatever. The loop pipe seems to be 1", and the drops are 1/2" copper. The overall system has a single circulator and zone valves for each thermostat-controlled zone.