The most common control valve body style is Single Seated as shown in Figure 1, which has widely used in process control applications, particularly in sizes NPS (Nominal Pipe Size) 1 through NPS 4. Normal flow direction is most often flow-up through the s
PG-2601B19Electric neck massager simulate real human massage to help relieve neck soreness, shoulder tiredness, body tension, improve sleep quality and promote blood circulation. Wet the neck where the two metal pads come in contact before use will make
HYMF/SF 20/380•Air-cooling; DSP+ARM+IGBT Structure; Optimized Q value control method•7-inch LCD display with touch screen; concise and legible interface simple to use; digitized control with high control accuracy•The power output and current output contro