ControlAir is a leading manufacturer of precision air pressure regulators, I/P transducers, E/P transducers, electronic pressure regulators, valve positioners, air relays, volume boosters, air filter regulators and frictionless diaphragm air cylinders. ControlAir is committed to offering high-quality products with excellent support and service. Located in Amherst, New Hampshire, USA ControlAir’s precision pneumatic and electro-pneumatic control products are designed, assembled and tested for critical process control, fluid automation and OEM applications.