This is an ultra-light and small model fit for the tracer line of a steam plant. The structure is simple and makes repairs easy. Operation is accurate and the item is highly durable. The built-in strainer prevents breakdowns or errors caused by impurities. The maximum back pressure is 80% of the primary pressure. When selecting the size of the trap, select one that is 3 times that of the necessary capacity for the trap. (This is dependent on the type of equipment and operational conditions.) Made of stainless steel beams, there is no concern for damage caused by freezing.