1.Only produce mould 2.describe:union ball valve 3.type:single,double,thread,butterfly,brass ball 4.material: ... We can provide various of single/double Union valves, check valves, membrane valves, bottom valves, gate valves, locking valves, deflation ... weigh, fast, long, excellent, chemical, pressure, traditional, easy clean, single , double, vertial, horizontal, perfect, small, big, thinkness, inch, ...