The S&S Series D and Series DA are single port, screwed-in, metal-seated globe style valve with unbalanced post-guided plug and push-down to close plug action used for high-pressure applications. These valves are used in oil and gas production, distribution systems and power plants. These valves are especially useful for throttling or on/off control of liquids or gasses. The flow characteristic of the Series D this equal percent, and the flow direction is up through the seat ring and past the valve plug. Flow directions of the Series DA is flow in either direction. This valve is available with cast integral flanges, welded flanges or screwed connections. Series DA Angle Valve is available with welded flanges or screwed connections. The valve plug and seat ring can be fitted tungsten carbide inserts or satellite overlay. Valve bodies are available in LCC, WCB and 316sst material.
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