According to Bloomberg, a German natural-gas storage company is suing Baker Hughes, accusing the oil field service company of supplying defective safety valves.

Citing Houston federal court documents, Bloomberg reported that the company (Triuva Kapitalverwaltungsgesellschaft), claimed that the safety valves supplied by Baker Hughes “can crack wide open” if welded into place in a corrosive environment.

In an emailed statement, Melane Kania, a spokeswoman for Baker Hughes, told Bloomberg “Baker Hughes’s German unit has ‘been in close contact’ with the operator of the two Triuva caverns that experienced safety-valve ruptures last year and provided ‘technical support on an as needed basis.’”