What happens: the cycle starts, the valve opens, water starts leaking from the anti-siphon, nothing comes out of the emitters, pressure gradually builds, then
the emitters start delivering water but slowly. Really puts the drip in drip, you might say.
Yet if I bleed a little during the cycle, suddenly full pressure arrives and the emitters start to deliver as expected! But the problem returns with the next cycle.
The valve is Richdel and I didn't change it when i converted to drip. The zone has just a dozen or so emitters so probably the flow is low.
I've tried tinkering with bleeding and flow control on the valve. Little or no improvement.
Does this ring a bell?