Series MP7000 mechanically actuated diaphragm metering pumps from Neptune Chemical Pump Company eliminates the use of contour plates on the liquid side of the diaphragm while the simple, straight-through valve and head design allows for improved flow characteristics. It is self-priming, and has a maximum capacity range up to 275 gph at 235 psi. 215/699-8700; www.neptune1.com; Booth #4656