Three 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”).

Chart Industries (NASDAQ:GTLS) is bettering its rating of C (“hold”) from last week to a B (“buy”) this week. Chart Industries is an independent global manufacturer of highly engineered equipment used in the production, storage and end-use of hydrocarbon and industrial gases. In Portfolio Grader’s specific subcategory of Earnings Growth, GTLS also gets an A. For more information, get Portfolio Grader’s complete analysis of GTLS stock.

This week, Colfax (NYSE:CFX) pushes up from a C to a B rating. Colfax is a supplier of a broad range of fluid handling products and technologies. For more information, get Portfolio Grader’s complete analysis of CFX stock.

Flow International (NASDAQ:FLOW) boosts its rating from a C to a B this week. Flow International designs, develops, manufactures, markets, and services ultrahigh-pressure waterjet cutting and cleaning systems, specialized robotics systems, and food safety applications. For more information, get Portfolio Grader’s complete analysis of FLOW 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.