The manifold connections are not NPT; they are "eurocone" which is a straight thread with chamfered o-ring seal. So the PEX fittings (available for different size PEX) all have this same thread to attach to the manifold. That's why they are not shipped with the manifolds.
The manifold connections are not NPT; they are "eurocone" which is a straight thread with chamfered o-ring seal. So the PEX fittings (available for different size PEX) all have this same thread to attach to the manifold. That's why they are not shipped with the manifolds.