If using the LCN pneumatic control box as the air source for the Von Duprin Pneumatic devises then you have to use the LCN 925 tubing because of the size of air line fitting on the LCN control box. The LCN 925 tubing has a ID of 1/8” and OD of 1/4”. The Von Duprin Pneumatic device itself will come with an adapter (part #051827) for the LCN tubing.
Von Duprin also offers pneumatic tubing but it is smaller in diameter than the LCN tubing and will not fit on the LCN control box fitting.
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