List 14 Double Disc Gate Valves continue to be the most rugged commonly used control mechanisms for on/off service. They are used in the general waterworks service; water pollution control; the chemical process industry; iron and steel mills, particularly blast furnace pipelines; in coke oven and by-product plant pipelines.
One of the most prolific designs in the water industry, the Resilient Wedge Gate Valve incorporates a fully rubber-sealed wedge to prevent the embedding and buildup of sand and sediment, which can lead to seal erosion on metal-seated gate valves. The Ludlow-Rennselaer Resilient Wedge Gate Valve is sealed around a ductile iron core, which is better able to handle changes in pressure and surges. This worry-free design allows for a drop-tight seal that will provide consistent and efficient service for years to come.