Ball Valves are generally used for controlling the flow (specially liquid flow) through it. The product uses hollow and pivoting ball to do the needful. The product comprises of a handle which is flat, balls and covering cage like structure. The valves made by Ningbo Pneumatic Technical Expert Co., Ltd. are very reliable and durable in their appointed task. They are very efficient in maintaining the pressure of water as well in tanks. The product is made of brass and stainless steel which gives it strength to perform for a longer period of time.