Port indication of valves are sometimes based on commonly used stds: JIS, NFPA, ISOP = supply portA = normally closed output portB = normally open output portEA = exhaust of port AEB = exhaust of port BP = 1 A = 4B = 2EA = 5 = R1EB = 3 = R2
Chuck,What the above people have failed to recogise is that the SY3240 is actually a manifold mounted valve so it has no threaded ports at all in fact the symbol lable SMC have placed on it won’t help since all the galleries are slotted at the bot