... a temperature, pressure, wear, "one drainage," "life-long self-absorption" and many other features. At present production of stainless ... substitute for a variety of long axis of liquid pumps, submersible pumps, submersible sewage pumps and other equipment for the best. 2, run ... air control valve", truly a "one-draining, life-long self-priming." 4, little vibration, low noise, mobile and flexible ...