| 摘要 |
A diaphragm 20 for a diaphragm valve has a body 22 comprising a first elastomer and a resistant layer 24 comprising a second, different, elastomer. Between the body 22 and the resistant layer 24 is a tie layer 26 which effects bonding of the body to the resistant layer. Diaphragms described in examples have good flexibility with a high level of chemical resistance and low surface adhesion. A fixing attachment for fixing the diaphragm in the valve is also described. |
