Manifold and riser work often needs a true four-way. This 20mm PVC cross provides it. Cold-water service is where this sits: risers, branches and appliance feeds. Rigid PVC does not corrode, rust or scale. A buried run or a boxed-in riser behaves the same in year ten as on the day it was commissioned, which is why it dominates cold-water distribution. PN 10 working pressure; solvent-socket connection.