Main use: It can automatically offer water for family use when hydraulic pressure is low. Offering water for hotels, restaurants, high buildings, and water towers. Boosting to offer water to solar water heaters. Sucking water from wells and ponds. Offering circulative water to industrial equipments. Garden irrigation and car washing. Model: 25GZ0.8-15, 25GZ1.0-15, 25GZ1.2-16, 25GZ1.5-16, 25GZ1.8-18, 25GZ2.2-25 Please send inquires to us for more sepcificate and information for each item.thanks