J21W - p - 40 64 p - 160 p - 320 p type needle valve and ball valve difference is bigger, we can distinguish between ball Industrial Valves and J21W - from function p - 40 64 p - 160 p - The different function of 320 p type needle valve, from ball valve and J21W - p - 40 64 p - 160 p - Distinguish between 320 p type needle valve structure. 【 Functional difference between 】 J21W - p - 40 64 p - 160 p - 320 p type needle valve is made up of external thread connection, applies to oil, water, gas and other non corrosive or corrosive medium, suitable for - 29℃～+440℃ - 70℃～- 240℃ ≤540℃ ≤570℃。 Than other types of valves, needle valves have better sealing performance and the ability to tolerate stress, generally used for small flow high pressure gas or liquid medium sealing, the most appropriate and cooperate with pressure gauge. Ball valve and J21W - p - 40 64 p - 160 p - 320 p type needle valve difference is bigger, ball valve, 球阀) Opening and closing is a sphere, driven by the valve stem, and for ball valve axis rotate 90 & deg; Open or closed. Can also be used on regulation and control of fluid, mainly used for cutting in line, distribution, and change the flow direction of medium, good sealing, convenient operation, opening and closing fast, simple structure, small volume, small resistance, light weight, etc. 【 Physical difference between 】 J21W - p - 40 64 p - 160 p - 320 p type needle valve' Summary 】 J21W - p - 40 64 p - 160 p - 320 p type needle valve and ball valve and the difference function, are quite different in application, in the selection of a certain need to pay special attention to diameter, pressure, material and use of media, whether at design time, or in the purchase, must be in strict accordance with the relevant technical requirements.
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