The PlugSeal is the latest addition to the Durco range from Flowserve. It has been designed specifically for the reverse osmosis desalination industry. The product provides absolute positive shutoff, is rated to ASME Class 600 and is available in a butt weld or flanged configuration. It is available in 904L stainless steel (UNS N08904) or in Super Duplex Stainless Steel (ASTM A995 Gr 5A.) The size range is from 1in to 16in nominal bore and has many features which make it ideal for desalination plants. For ease of maintenance, the tapered plug design allows the plug to be reseated externally after long term wear on the plug. The use of a PFA lined plug also eliminates the requirement for a sleeve which is often difficult and expensive to replace and which requires special costly tools. Readily accessible adjuster bolts allow for in-line adjustability of the plug and the top entry style allows for a convenient removal and re-installation of the plug. The simple and efficient design of the PlugSeal allows for quick repair without the need for specialist training or the need to remove the product and send to a repair centre. The valve can remain in the process line. Easy actuation using a wide range of pneumatic or electric actuators is achieved using an ISO mounting pad.