| 摘要 |
There is provided a dispenser for dispensing a medicament in a fluid propellant that includes a canister for housing the medicament and a drug-dispensing valve. The valve is made wholly or substantially of metal and the internal metal surfaces of the valve include a coating that enhances the surface energy thereof. The valve coating on the metal surfaces reduces the tendency of drug to adhere thereto, and improves the frictional properties thereof.
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