low pressure regulators pressure regulators rotary valve LOW PRESSURE REGULATORS Cashco manufactures high and low pressure regualtors, and throttling, rotary, and linear control valves for pneumatic or electric actuation insizes from 1/2” to 12”, and Cv ranges 0.1 to 8455. Many different models are available to handle slurries, cryogenicservice, corrosive fluids, and the reduction of fugitive emissions.