Safety Valve And Needle Valve - High Pressure Ball Valve

The safety valve is a special valve that is normally closed under the action of external forces on the opening and closing parts. When the medium pressure in the equipment or pipeline rises beyond the specified value, the medium pressure in the pipeline or equipment can be prevented from exceeding the specified value by discharging the medium outside the system. Safety valves are automatic valves, mainly used in boilers, pressure vessels and pipelines. The control pressure does not exceed the specified value, which plays an important role in protecting personal safety and equipment operation. The safety valve can only be used after pressure test. Needle Valves are used to meter fluid flow through tubing or ports. Flow is regulated by inserting or withdrawing a tapered stem into or out of a similarly tapered orifice, creating a very precise way of adjusting fluid flow through the orifice. Key specifications include valve type, port connections, valve size, and the materials that make up the valve body, which includes its seat, seal, lining, and stem packing. Needle valves are used in vacuum systems and for metering systems where precise flow regulation is required. Because of the high number of turns required to close a needle valve, they are not ideally suited for use in shut- off service applications.