Abstract: A system for pumping fluid (e.g., but not limited to, drilling fluid), the system having pump apparatus; including a plurality of removable pump modules; and, in certain aspects, removable valve cartridges for such modules.

Abstract: A system for pumping fluid (e.g., but not limited to, drilling fluid), the system having pump apparatus; including a plurality of removable pump modules; and, in certain aspects, removable valve cartridges for such modules. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).

Abstract: An improved automatic french frying machine and method uses a supply of cooking oil which remains in a cooking vat during normal operation and is heated directly in the cooking vat. A system of thermostats combines with a heating element within the cooking vat to ensure proper cooking temperature and safe operation. An automatic initialization and monitoring system ensures safe startup and operation. Preferred embodiments also include an automatic flushing cycle which is activated at predetermined intervals to clean the cooking vat and replenish the cooking oil within the vat. A specially shaped cooking vat ensures that food particles will be removed from the vat during the flushing cycle. Oil degradation is minimized by either an open-topped cooking vat or a cooking vat having a lid which remains open during cooking.