Manifold sub-base NAV-1/2-3C-ISO With port pattern as per DIN ISO 5599/1, for manifold assembly, Connections underneath. Conforms to standard=ISO 5599-1, Authorisation=UL - Recognized (OL), Product weight=700 g, Auxiliary pilot Air port 12/14=G1/8, Pneumatic Connection, port 2=G1/2