These valves are designed for least possible obstruction to free flow by providing curvature turns in the body. There by minimizing stresses & turbulences also. Discs are plug type and held together with stem by disc nut & allows the perfect seating arrangement on the seat. Carbon steel & cast Iron valves have renewable seats while stainless and other higher grade materials have integral seats. All the valves have back seat arrangement as an additional sealing under full working pressure which facilitates replacement of packing with the valve under fully open condition.