GF Piping has enhanced its line of pressure regulating valves and introduced a product guide. The line includes an improved molded design for Models Type V185 and Type V186. The Model Type V182 features a new valve body and incorporates a new piston/o-ring design to improve flow characteristics. The new valves are offered in three styles - for pressure reducing, retaining, or relief - and are available in four body materials. Available in sizes from 1/2 inch to 4 inches, pressure ranges are from 7 to 150 psi. The new PRV Product Guide includes installation, operation and maintenance instructions and a sample application schematic. For more information, visit