Stainless Steel Needle Valve
The material of the needle valve should be selected according to the type of fluid and operating conditions. For example, if the fluid is corrosive, needle valves made from materials such as stainless steel, hastelloy or monel alloys will be required. On the other hand, if a high-temperature fluid is being handled, needle valves made from materials such as inconel or titanium may be required. The temperature range of a needle valve should be chosen based on the maximum and minimum temperatures that the valve will face during operation.
Overview
Working Principle:
Stainless steel needle valve is mainly composed of valve body, valve stem, valve flap and seal ring. Its working principle is that when the valve stem is lifted upward, the valve flap is separated from the sealing ring, thus opening the pipeline. When the valve stem is pressed downward, the valve flap and the seal ring are in close contact, thus closing the pipeline. As the sealing ring of stainless steel needle valve is made of high quality material, it has good sealing performance and corrosion resistance. Needle valves are designed to operate in a specific temperature range, which is -20°C to 500°C or higher. Stainless steel needle valves are typically available in temperature ranges of -20°C to +440°C or -70°C to -240°C.
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