InLine Check Valves Parker Supply（直列式止回阀帕克供应）.pdf

™ “Check Valve Doctor ” In-Line Check Valves DFT® ™ “Check Valve Doctor ” DFT in-line check valves began over 50 years ago with a customer’s need for a small metal-seated check valve that could be installed in any position while providing tight shut-off. The Basic-Check® valve was developed to satisfy that need. Over the following decades, other customers’ needs led to the development of the DLC® ® ® ® ® , Excalibur , GLC , PDC , SCV and WLC styles of in-line silent check valves. Each of these DFT in-line check valves addresses the particular needs of a modern day customer. DFT’s objective is to solve check valve problems and prevent check valve failures. DFT has learned by listening to customers like you that each indus- try has special needs that can exceed other check valve designs. We spe- cialize in providing in-line check valves that meet customer requirements as opposed to simply meeting line size. In some cases, minor modifications to our valves have solved customer problems by improving performance and extending service life. The “Check Valve Doctor” continues to grow from satisfying these needs and solving problems. DFT silent check valves are known around the world as the valve to use to prevent or eliminate water hammer problems. Whatever your size, pres- sure or piping configurations, DFT has a check valve for you. Thank you for considering DFT for your check valve requirements.