400W whirlpool pump for wire and cable equipment is the first P International Machinery Co., Ltd. is a professional sales and quality are funded by the National Inspection Bureau 3C inspection, and SGS certification, CE certification, quality and safety have great protection. Absolute advantage in price, fast delivery. No matter which brand of whirlpool pump, need to be protected by two aspects: First, the pressure, the second is dust. For pressure, often using a pressure relief valve, which is a relief valve, when the whirlpool pump operating pressure exceeds the pressure relief valve setting, the relief valve will automatically open to relieve excess pressure, thereby protection whirlpool pump. For dust, often using a filter. It is based on the use of different site, often using different filtering accuracy of filter cartridges, filter different methods have different maintenance and service life, in the order you need to ask. In some special occasions, but also the need for special protection: For example, when used in a sealed environment, pay attention to ventilation; when the ambient temperature (intake air temperature is relatively high), but also to pay attention to ventilation, or choose to allow into the wind high temperature vortex pump (eg there is a ring-shaped drum whirlpool pump, allowing the inlet air temperatures up to 130 °); for some brand whirlpool pump, you may also have their own recommendations, before buying, preferably in more detail understanding.