ChampionX Holding S-4/A Registration of securities issued in business combination transactions (amended)

Exhibit 23.4

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on FormS-1 and FormS-4 of ChampionX Holding Inc. of our report dated March 2, 2020 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting of Apergy Corporation, which appears in Apergy Corporation’s Annual Report on Form10-K for the year ended December 31, 2019. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

Houston, Texas

April 16, 2020