PEW provides Fire Fighting Water Supply Equipment (Complete Fire Fighting Water Supply Equipment) along with diaphragm tanks, control panels and entire range of electric & diesel driven pump sets. Controllers for electric motor driven fire pumps are available with various methods of starting. These include Direct-on-line, Star-Delta, Auto-transformer etc,. Packaged Diesel engine driven pump sets incorporate 12 V or 24 V DC Controller. Controllers can be supplied free standing or mounted on the base plate, completely wired and connected to a single or mulch-pump system. Some Fire fighting systems are also equipped with a bag type diaphragm air pressure tank or an automatic replenishing air pressure tank. Both tanks have different features, viz., the bag type diaphragm air pressure tank features simple structure, high efficiency and long term use with single time air replenishing while the automatic replenishing tank may adjust air- water pressure ratio accurately and is not subject to the limitation of aging of the bag or its size.