The flow rate for this pump is 2500 gallon per hour. It fits 18 and 24 diameter Intex frame set pools and easy set pools and also fits all filter pumps and above ground pools that use 1.50" hoses with clamps or screw on type Intex hoses. The valve should be released for trapped air. The mounted waterproof on and off switch and it is easy to install, where you simply hook up hoses and plug it in. One filter cartridge included and installs making this filter pump ready for immediate use