الوصف

1、 Simple design，good interchangeability and low price.
2、 Sealing of the stem is not distorted easily to avoid leakage of stem, and possesses
features such as excellent capacity of supporting, stability, and fastness.
3、 Less rubber dosage of valve seat results low potential affection so that
the torque size can be controlled in a proper scope.
4、 Using the two piece type stem without pin connection，With simple design and
compact structure, it is convenient for worker to maintain and dismantle. The disc
with the function of automatic centering can be matched with the seat perfectly.
5、 The valve seat with phenol aldehyde backset possesses features of break off preventing,
stretch proofing and leak proofing as well as easy changing, etc.
6、 The sealing surface is incorporated with the backrest so that the amount of the seat
is decreased.