CP-18-51 is a Combiplast self-regulated air core pressure regulator designed to provide a constant, stable air pressure required for optimal operation of pneumatically operated valves. It is designed to be used on up to 18 bar pressure systems and can reduce unregulated pressure down to a minimum of 0.5 bar. It is constructed from corrosion resistant nickel-plated brass and is supplied with adjustable pressure settings. It is suitable for use in hazardous areas, pressure ranges from 0.5 to 18 bar, and is equipped with a safety valve.