1.PVC Helix Hose 2.Can working under High Negative Pressure ... and minus pressure, and small bending radius, this hose is used for drawing and conveying water, oil, ... pipes. Specifications of PVC Suction Hose CHARACTERISTICS This hose,with steel wire screwing inlaid in the hose,is light,transparent,with ... With colorful symbol lines on the surface of the hose,it can be more beautiful. WORKING TEMPERATURE - ...