It includes a built in check valve. Designed to pump potable water from wells up to 100 ft. Pumps 10 GPM with a range of 9 GPM to 11 GPM depending on pumps depth in the well.2-wire installation does not require a control box. The item "Everbilt 3/4 HP Submersible 2-Wire Motor 10 GPM Deep Well Potable Water Pump" is in sale since Friday, July 12, 2019. This item is in the category "Home & Garden\Home Improvement\Plumbing & Fixtures\Pumps". The seller is "wisteria_auctions" and is located in Athens, Alabama. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Saint kitts and nevis, Saint lucia, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Guadeloupe, Iceland, Cayman islands, Sri lanka, Maldives, Nicaragua, Oman, Peru, Paraguay, Viet nam, Uruguay, Russian federation.