Hi! I wonder if someone now what size the thread are on Water valve VMA422.
Hello Goophster,
The “thread” is ½” BSP, which corresponds to a measured diameter of approximately 20 mm.
At product page on Our website, the specifications say “inlet-outlet 8mm ( 0.315" ).”, that is if You use the supplied couplers.
Hope to have informed you sufficiently
Best regards,
Velleman Support