Specifications include, but are not limited to: The pumps consist of a gasoline driven engine, 18 horsepower minimum, a centrifugal type pump, mounted on rails. Department of Natural Resources and Conservation will supply their own pressure gauge for the panel and the check valve on pump discharge side of the pump. ; ITEM 1. PUMP, CENTRIFUGAL TYPE, FIREFIGHTING. (SEE SPECIFICATION AS ATTACHED). MODEL # HALE HPXB75-18 PUMPS. ITEM 2. AN OEM BRIGGS AND STRATTON MUFFLER AND GUARD MUST BE PROVIDED FOR EACH PUMP. PART # 691562 FOR MUFFLER, PART # 691571 GUARD AND TWO (2) GASKETS, PART #691613 WILL BE PROVIDED FOR EACH PUMP. DEPARTMENT OF NATURAL RESOURCES & CONSERVATION WILL INSTALL THE MUFFLER AND GUARD. NO OTHER MUFFLER WILL BE ACCEPTED.