PD, PM, PS and PL series pumps are used in oil industry for transferring many fluids such as vegetable & animal oil, margarine, cooking oil and canola oil..etc
PS series pumps are mostly used for under vacuum applications. Thanks to its special impeller, it operates without cavitation and problem. PD and PM series pumps are mostly used for operations to loading amd unloading tankers. PL series pumps are used for the applications which require hygiene (margarine).
As for the pump material, the ones except PL series are cast iron. Stainless steel is optional. PL series are made of stainless steel as a standard.