The overall ratings of 4 Machinery stocks are down on Portfolio Grader this week. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Slipping from a C to a D rating, Graco Inc. (GGG) takes a hit this week. Graco Inc. supplies technology for the management of fluids in both industrial and commercial applications. The company also gets F’s in earnings growth and earnings momentum. For more information, get Portfolio Grader’s complete analysis of GGG stock.

Mueller Industries, Inc. (MLI) gets weaker ratings this week as last week’s C drops to a D. Mueller Industries, Inc. manufactures and sells brass, copper, plastic and aluminum products. For more information, get Portfolio Grader’s complete analysis of MLI stock.

This week, Gorman-Rupp Company (GRC) drops from a C to a D rating. Gorman-Rupp Company designs, manufactures, and sells pumps and related fluid control equipment. For more information, get Portfolio Grader’s complete analysis of GRC stock.

Graham Corporation’s (GHM) rating weakens this week, dropping to a D versus last week’s C. Graham Corporation designs and builds vacuum and heat transfer equipment for process industries around the world. The company also gets F’s in sales growth, earnings growth, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of GHM stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.