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