FLEXFLO peristaltic pumps from Blue-White Industries are designed for abrasive, thick and gaseous fluids that can foul conventional metering pumps. Self priming and valveless, the pumps feature tube failure detection (TFD) to keep operators and pump rooms safe from spills. If noncompatible chemicals are detected in the head, the pump automatically shuts off and will not restart until the chemical has been removed. Other features include feed output to 5.17 gph and working pressures to 1,000 psi. Digital models accept 4-20mA, 0-10VDC and pulse inputs for speed control and one amp alarm output relay. 714/893-8529; www.blue-white.com.