PRD3HP miniature three-stage diaphragm, high-pressure regulator by Beswick Engineering, Greenland, NH, is capable of handling inlet pressures up to 3,000 psi, yet it weighs just 79 grams in brass and is about 1 in. in diameter.

It accurately reduces inlet pressures as high as 3,000 psi down to an outlet pressure range of 0-30 psi and is for low pressure regulation such as ½ psi with minimal droop or rise, even with wide swings in inlet pressure. The PRD3HP eliminates the need for two pressure regulators (one to reduce the high pressure to an intermediate pressure and a second pressure regulator to reduce the intermediate pressure to the low pressure.)