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SMC cross-shaped push-in fittings for tube from Ø4 to Ø12 mm, also reducing

Cross fittings are cross-shaped push-in fittings that split one compressed air tube into three others, without thread or tools. They are part of the instant links: you push the tube into the port and it holds, and the release ring frees it again.

All the cross fittings in this category are SMC, from the KQ2 series. Start with the outside diameter of the tube. The versions with four equal ports come in Ø4, Ø6, Ø8, Ø10 and Ø12 mm. There are also reducing versions that combine two tube sizes, such as Ø6 to Ø8 mm, Ø8 to Ø10 mm and Ø10 to Ø12 mm. With those you connect a thinner branch to a thicker supply without a separate reducer.

Always measure the tube on the outside, because the size on the fitting refers to the outside diameter. A cross is useful where several consumers sit close together, for example cylinders and valves on the same machine frame. If one of the outlets stays unused, a push-in blanking plug of the same diameter closes it off cleanly.

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