... clear communications.2. We can provide various of single/double Union valves, check valves, membrane valves, bottom valves, ... gate valves, locking valves, deflation valves, IBC valve, three way valve, water tapes, etc., made of ABS, U-PVC ... fast, long, excellent, chemical, pressure, traditional, easy clean, single , double, vertial, horizontal, perfect, small, big, thinkness, inch, structure, surface, ...