Hydra-Cell Metering Solutions P700 Series metering pumps feature a hydraulically balanced, multiple-diaphragm design to provide smooth, linear and virtually pulse-free flow without the need for pulsation dampeners. Employing variable frequency drive (VFD) electronic flow control adjustment, P700 metering pumps reportedly deliver precise, accurate flow throughout the turndown range at up to 1,394 gph (4,396 lph) with discharge pressure ratings to 1,200 psi (83 bar). Patented diaphragm position control protects the pump and enables operation in case of a closed inlet. Since the process fluid is not used for lubrication, the P700 can run dry indefinitely.