I agree with the above. I did notice that the manifold design matters for batch sparging. Simpler is actually better. A basic kettlescreen type drain cover is less prone to getting stuck than a full-blown manifold that covers the tun bottom (but which is more conducive to making fly sparging more efficient). That's because you're draining the tun, not "sparging" the grain. Denny's simple water hose SS-braid deal is probably the lowest cost and easiest solution.