By comprising the pressure difference adjusting means, it is possible to eliminate the difference in fluid pressure between the inside and {TAIL ~ the outside} of {HEAD ~ the hollow part} caused by the change in fluid temperature and to prevent the destruction of the membrane due to the deformation of the membrane caused by the difference in pressure 
By comprising the pressure difference adjusting means , it is possible to eliminate the difference in fluid pressure between the inside and { TAIL ~ the outside } of { HEAD ~ the hollow part } caused by the change in fluid temperature and to prevent the destruction of the membrane due to the deformation of the membrane caused by the difference in pressure
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH