Rotary engines (also known as Wankel engines and Wankel rotary engines) are quite different from piston or "reciprocating" engines. One of the distinguishing features is that they don't need valves to ...

Stroud-basedLB Bentley designs and manufactures small bore subsea valves for as well ashigh-pressure filters and desiccant dryers. Its keymarket is in patented valves, including rotary gate valves, ...