Adjustable base pressure from 3 to 20 PSI--recommended for A-2000; P/N 027-11202 and Belt Drive; P/N 027-11105 Drag Race fuel pumps. Ideal for use with high volume electric or mechanical fuel pumps of any make, where dynamic flow and rock steady pressure control is desired. Handsomely finished with a "Bullet Proof", Type III hard-coat anodized exterior.