SRPING RETURN BALL VALVE – THREAD

STR spring return valve refers to the valve that can return to the original starting position under the action of internal spring. It is suitable for 1/4 rotary handle operation of the ball valve, is generally composed of two/three pieces of the ball valve and a spring lever or handles unit to return the valve to the fully open position, also known as spring automatic return ball valve or spring self-closing ball valve. The spring return ball valves can be offered to include socket weld, butt weld and flanged, they are used in applications where positive return to the closed position is required following momentary or short periods of operation for food, pharmaceutical, oil, chemical, metallurgical, mechanical process and other industries. In addition, the spring return design has been used for gate valves and globe valves.