The check valves on this steam locomotive are located under the small cover between the chimney and the main dome.Check valves are often used with some types of pumps. Piston-driven and diaphragm pumps such as metering pumps and pumps for chromatography commonly use inlet and outlet ball check valve.
A ball check valve is a check valve in which the closing member, the movable part to block the flow, is a ball. In some ball check valves, the ball is spring-loaded to help keep it shut. For those designs without a spring, reverse flow is required to move the ball toward the seat and create a seal.
Valves such as globe valve, check valve, gate valve, throttle valve and reducing valve all have directivity.If installed in the opposite direction, throttle valves' operation performance may be weakened and service life may be shortened; reducing valves may have no effect.
The gate valve refers to the valve that the closing part (gate) moves vertically along the channel axis. It is mainly used as the cutting medium in the pipeline, that is, it is fully open or fully closed.Check valve is automatically to open and close via media pass through.
Ball valve, the opening and closing part ball is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. Solenoid valves are electromagnetically controlled industrial equipment.
​Hangna soft seated and metal seated valves are widely used in water & waste water treament,include:ball valve,butterfly valve,check valve,gate valve,globe valve,plug valve,Y strainer,valve's flanges and pipe fittings etc.
Hangna range of ball valve,butterfly valve,check valve,gate valve,globe valve,plug valve,Y strainer,valve's flanges and pipe fittings are used for Steam and Boiler's application.
The refining industry has undergone many changes, from the methods of processing to the length of time that they operate their process units. Hangna range of valves are used in refining industry with varied pressure & temperature ratings.