Four Machinery stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

Graco (NYSE:GGG) is bettering its rating of C (“hold”) from last week to a B (“buy”) this week. Graco supplies technology for the management of fluids in both industrial and commercial applications. In Portfolio Grader’s specific subcategory of Equity, GGG also gets an A. For more information, get Portfolio Grader’s complete analysis of GGG stock.

This week, Mueller Water Products (NYSE:MWA) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. Mueller Water Products manufactures a broad range of water infrastructure and flow control products for use in water distribution networks, water and wastewater treatment facilities, gas distribution systems and fire protection piping systems. The stock price has risen 5.8% over the past month, better than the 1.3% decrease the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of MWA stock.

Middleby Corp. (NASDAQ:MIDD) boosts its rating from a B to a A this week. The Middleby is engaged in the design, manufacture, marketing, distribution, and service of a line of cooking and warming equipment used in all types of commercial restaurants and institutional kitchens and food preparation, cooking and packaging equipment for food processing operations. Investors seem to agree with the upgraded status of the stock, and have pushed the stock up 8% over the past month. For more information, get Portfolio Grader’s complete analysis of MIDD stock.

This is a strong week for Commercial Vehicle Group (NASDAQ:CVGI). The company’s rating climbs to B from the previous week’s C. Commercial Vehicle Group designs and manufactures cab related products and systems for the commercial vehicle markets worldwide. The stock’s trailing PE Ratio is 5.10. For more information, get Portfolio Grader’s complete analysis of CVGI 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.