The WEBTROL MVPS-RE1 drop-in package for existing progressive cavity systems from Weber Industries includes a progressive cavity pump that provides nearly constant flow and is able to adjust for pressure variations in any system setting. The package is powered by a 1 1/2 hp motor spinning at 1,750 rpm to provide grinding torque. All package parts are readily available and easily replaceable, which promotes quick and easy service in the field, according to the company. 800/769-7867; www.webtrol.com.