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. With all package parts readily available and easily replaceable, it can quickly and easily be serviced in the field. 800/769-7867; www.webtrol.com.