The H type expansion valve manufactured by our company has adopted
two kinds of inner sealing structure: one is the copy of the international
“O” ring structure, the other is the Teflon gasket structure originally
created by our company (Patent No.: ZL01260199.3).
The characters of the inner sealing structure are as follows:
1. High sensitivity of regulation
2. Stable regulation
3. Low leakage
4. Reliable temperature sensing?no deviation
5. No sticking?jumping
6. Long service life.
(The above two structures are selective with respect to the user’s