(2) The temperature difference between media is not limited;
(3) Can work under high temperature and high pressure, generally the temperature is less than or equal to 450 degrees and the pressure is less than or equal to 6.4 MPa.
(4) It can be used in places with serious dirt;
(5) It can be used in places where pipelines are easy to corrode. (1) Small floating head is easy to leak inside;
(2) The consumption of metal materials is large, and the cost is 20% higher;
(3) the structure is complex