Abstract: The present invention relates to a block assembly (15) for pneumatic distributors (1) comprising a base (16) intended to receive a plurality of pneumatic distributors, possessing for this purpose at least one supply duct which can be connected to a supply inlet of each distributor and at least one exhaust duct which can be connected to each exhaust outlet of each distributor, and additionally having. for each control outlet of each distributor, at least one corresponding outlet channel intended to be connected to a pneumatic actuator, said base being designed such that the pneumatic distributors can be arranged on either side of a longitudinal central axis (A) of said base in at least two substantially parallel rows, characterized in that the base is also designed to equally receive pneumatic distributors of different types.