Body, bonnet, locknut and adjusting screw material anodized aluminum alloy, button spring, piston and piston spring material cres, temp range minus 40 plus 85 degrees c, working pressure 5000 psi, 7/16-20 unf 3b port both ends, over-all dim. 3 in.Lg by 1-1/2 in. W by 3-3/4 in. H