Plumbing sizes and drainage

[spit.fire]

Originally Posted by gregzz4

Thanks for the thoughts and links everyone

It has to be the 1" drain plumbing

The emerg kicks in if I crank it up, so it's not the teeth

I'll change it to 1-1/2"

where in the pipe is your valve? the lower the valve the better your flow will be initially as anything below the valve wont act as a siphon until the bubbles are all cleared out