[American Standard] advantage shutoff valve - Riverstone ANSI flanged valve shut-off valve in the pipeline is mainly used for cutting, distribution and change the direction of flow of the medium. Valve is a new type of valve is widely used in recent years, it has the following advantages: 1. Fluid resistance, its drag coefficient with the same pipe lengths are equal. 2. Simple structure, small size and light weight. 3. Close and reliable valve sealing surface material widely used plastic, sealing, and has also been widely used in the vacuum system. 4. Easy to operate, opening and closing rapidly, from fully open to fully closed as long as the rotation of 90 °, to facilitate remote control. 5. Easy maintenance, simple gate structure, seals are generally activities, the removal replacement is more convenient. 6. When fully open or fully closed, the sealing surface and the dielectric isolation ball and seat, through the media, will not cause erosion of the valve sealing surface. 7. Wide range of applications, from small diameter to a few millimeters to a few meters from high vacuum to high pressure can be applied, when the ball is rotated 90 degrees, in the import and export of office should be fully rendered sphere, thus cutting off the flow. 4. [American Standard] advantage shutoff valve - Riverstone valves open and close without friction. This feature completely solve the traditional [wiki] Valve [/ wiki] due to friction between the sealing surface and affect the sealing problem. 2, the coat structure. For valves installed in the pipe-line inspection and maintenance directly, can effectively reduce plant parking, and reduce costs. 3, single-seat design. Remove the valve due to abnormal pressure in the cavity medium affect the use of safety. 4, low torque design. Special structural design of the stem, just with a little hand can easily open and close the valve. 5, wedge-shaped sealing structure. The valve stem is provided by mechanical force, the ball onto the seat and wedge pressure seal, the valve seal is not affected by changes in pipeline pressure, sealing performance under various conditions have a reliable guarantee. 6, since the structure of the sealing surface clean. When the ball away from the seat tilt, the pipeline fluid along the sealing surface of a sphere through 360 ° uniform, not only eliminates the high velocity of the seat of local erosion, but also washed away the sealing surface accumulations reach self cleaning purposes . Such a valve installed in the pipe to be level one, ① American Standard globe valve product name and model ② ③ American Standard American Standard caliber shutoff valve shut-off valve with an attachment so that we can correct for your selection. Second, if the unit has been selected by the design firm Riverstone American Standard valve shut-off valve type, press the stop valve American Standard model directly to our Sales Department Order.