Roughly the size of 10 stacked quarters, the regulator weighs about 23 gm in aluminum and 50 gm in brass and stainless steel. The PRD3 precisely controls output pressures from 0 to 20 psig. Maximum rated inlet-supply pressure is 500 psig. The regulator maintains a constant output even with wide swings in input pressure.

Beswick Engineering Co. Inc., 284 Ocean Rd., Greenland, NH 03840, (603) 433-1188,