{"id":15067,"date":"2026-05-21T07:19:52","date_gmt":"2026-05-21T07:19:52","guid":{"rendered":"https:\/\/npt-lok.com\/?p=15067"},"modified":"2026-08-18T07:21:26","modified_gmt":"2026-08-18T07:21:26","slug":"needle-valve-applications","status":"publish","type":"post","link":"https:\/\/npt-lok.com\/id\/needle-valve-applications","title":{"rendered":"Aplikasi Katup Jarum dan Pertanyaan yang Sering Diajukan"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">This is the third part of our Needle Valve series. If you haven\u2018t read the first two, here is what you missed\uff1a<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Part 1\uff1a<a href=\"https:\/\/npt-lok.com\/id\/apa-itu-katup-jarum-dan-bagaimana-cara-kerja-katup-jarum\/\"> What a needle valve is and how it works<\/a><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Part 2\uff1a <a href=\"https:\/\/npt-lok.com\/id\/needle-valve-types-and-selection-guide\/\">Types of needle valves and selection guide<\/a><\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">In this part, we look at where <a href=\"https:\/\/npt-lok.com\/id\/katup-jarum\/\">katup jarum<\/a> are actually used and answer common questions.<\/span><\/p>\n<p>&nbsp;<\/p>\n<ol>\n<li><span style=\"font-weight: 400;\"> Common Applications of needle valves<\/span><\/li>\n<\/ol>\n<p><b>Oil Industry<\/b><\/p>\n<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/npt-lok.com\/id\/high-pressure-needle-valve\/\">High-pressure needle valves<\/a> are used in the oil industry for applications such as wellhead control panels, sampling systems and chemical injection units.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-15080 aligncenter\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Oil-refineries-1.jpg\" alt=\"Kilang minyak\" width=\"400\" height=\"540\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Oil-refineries-1.jpg 400w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Oil-refineries-1-9x12.jpg 9w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p><b>Pneumatic systems<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Needle valves are used to control the flow of compressed air to and from a variety of automation equipment and are critical in providing smooth and precise control of processes and functions to ensure safe and efficient operation of machines and related plants.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-15084 aligncenter\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Pneumatic-systems.jpg\" alt=\"Pneumatic systems\" width=\"400\" height=\"540\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Pneumatic-systems.jpg 400w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Pneumatic-systems-9x12.jpg 9w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p><b>Laboratories and pharmaceuticals<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Needle valves are used to control the flow of gases and liquids. For example, needle valves are used to control the flow of an inert gas in analytical laboratory equipment such as chromatography systems and other laboratory equipment. In some cases, high purity needle valves are required for very sensitive applications in order to prevent contamination.<\/span><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-15079 aligncenter\" style=\"font-weight: inherit;\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Test-stands-1.jpg\" alt=\"Test stands\" width=\"400\" height=\"540\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Test-stands-1.jpg 400w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Test-stands-1-9x12.jpg 9w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p><b>Water and wastewater treatment plants<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Needle valves are used in chlorine and other gas feed points, chemical dosing applications, control instruments for water quality measurement.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-15081 aligncenter\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Water-and-waste-water-1.jpg\" alt=\"Water and waste water\" width=\"400\" height=\"540\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Water-and-waste-water-1.jpg 400w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Water-and-waste-water-1-9x12.jpg 9w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p><b>Vacuum systems<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Needle valves are used to allow a small amount of air into a vacuum chamber and need to be controlled precisely in order to maintain the required level of vacuum.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-15085 aligncenter\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Vacuum-systems.jpg\" alt=\"Vacuum systems\" width=\"400\" height=\"540\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Vacuum-systems.jpg 400w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Vacuum-systems-9x12.jpg 9w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p><b>The Gas industry<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Needle valves are used to control the flow of gas including propane, natural gas and Nitrogen. The safe and precise control of these gases is critical.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-15032 aligncenter\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Indoor-air-lines.jpg\" alt=\"Indoor air lines\" width=\"400\" height=\"540\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Indoor-air-lines.jpg 400w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Indoor-air-lines-9x12.jpg 9w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p><b>Instrumentation and measurement<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Needle valves are used as part of <a href=\"https:\/\/npt-lok.com\/id\/needle-valve-for-pressure-gauge\/\">pressure gauges<\/a>, flowmeters and analyzers. They are used for \u201czeroing\u201d and for calibrating the instrument while in service.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-15083 aligncenter\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Instrumentation-and-measurement.jpg\" alt=\"Instrumentation and measurement\" width=\"400\" height=\"540\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Instrumentation-and-measurement.jpg 400w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Instrumentation-and-measurement-9x12.jpg 9w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<ol start=\"2\">\n<li><span style=\"font-weight: 400;\"> Pertanyaan yang Sering Diajukan (FAQ)<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Q1. Needle valves for continuous flow only or can they also be used for shut off of lines?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A: Yes, they are capable of being totally \u201cshut off\u201d and sealed; but not recommended for repetitive \u201con &amp; off\u201d service, as the seat will wear faster than with a Ball Valve.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q2. Why shouldn\u2018t I tighten the needle valve too much?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Needle valves are primarily used to control the amount of fluid flow, and as such they are not ideal for use as \u2018on\/off\u2019 valves. Although they can be used to shut off the fluid completely and provide a tight seal when closed, they are not recommended for frequent use as shut-off valves as the seat can become damaged quickly. Ball valves are far more suited for such applications.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q3. PTFE or graphite packing, which one should I pick\uff1f<\/span><\/p>\n<p><span style=\"font-weight: 400;\">PTFE packing is the standard material for needle valves for fluid services. In ideal cases, PTFE packing is used up to temperatures of 200\u00b0C. Graphite packing is used for higher temperature services, above 200\u00b0C.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q4. I have some sort of leak around the stem of the needle valve. What am I doing wrong?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Adding another 1\/8 turn to the packing nut on the stem should stop any leaks. Be aware that over tightening the packing nut can prevent the stem from rotating. If this happens the packing will most likely need to be replaced.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q5. Can I use needle valves for steam service?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Yes, but for use with steam you would need to use Graphite packing instead of PTFE packing as PTFE has a melting point above which it will soften and leak.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q6. Can you connect NPT to BSP threads of the needle valve?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">NPT threads cannot be mixed with BSP threads, as NPT threads have a 60\u00b0 angle and BSP threads have a 55\u00b0 angle. Pressuring NPT threads against BSP threads will cause leaks, potentially damaging the threads in the process. Only use NPT threads of the needle valve with other NPT threads, and BSP threads of the needle valve with other BSP threads.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q7. What is the maximum pressure rating for a needle valve\uff1f<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Typically Standard Needle valves are rated up to 6,000 psi and we have High-Pressure Needle valves that are rated up to 10,000 psi and higher depending on design.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q8. Do you provide material certificates\uff1f<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Yes. MTC with heat number, chemistry and mechanical properties is available on request.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q9. What is your MOQ\uff1f<\/span><\/p>\n<p><span style=\"font-weight: 400;\">10 pieces of any size. It is advisable to start small to test the valves and then scale up.<\/span><\/p>\n<p>&nbsp;<\/p>\n<ol start=\"3\">\n<li><span style=\"font-weight: 400;\"> Final Thoughts<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">A <a href=\"https:\/\/npt-lok.com\/id\/katup-jarum\/\">katup jarum<\/a> is a very simple industrial valve that can be used to very precisely control the flow of a fluid. The core value of a needle valve is that it allows flow to be controlled, not just opened or closed.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The pressure rating of the selected needle valve must be at least one rating higher than the maximum pressure in the system.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">316 stainless steel is the safest material for most applications.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">When using needle valves, always remember to use the same type of threads. NPT threads must not be mixed with BSP threads. In the worst case, the threads could even get damaged by trying to force them together, leading to leaks.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Needle valves cost a little to install, but in the beginning, are possibly the most expensive industrial valves on the market. However, in terms of the amount of time they will save you, their long term cost will be minimal.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Where to Go from Here<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Need to understand the basics first\uff1f Read <a href=\"https:\/\/npt-lok.com\/id\/apa-itu-katup-jarum-dan-bagaimana-cara-kerja-katup-jarum\/\">What Is a Needle Valve and How It Works<\/a><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Need to pick the right one\uff1f Read <a href=\"https:\/\/npt-lok.com\/id\/needle-valve-types-and-selection-guide\/\">Needle Valve Selection Guide<\/a><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ready to buy\uff1f Browse <a href=\"https:\/\/npt-lok.com\/id\/katup-jarum\/\">our Needle Valve products<\/a> or contact us for a quote<\/span><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>This is the third part of our Needle Valve series. If you haven\u2018t read the first two, here is what you missed\uff1a Part 1\uff1a What a needle valve is and how it works Part 2\uff1a Types of needle valves and selection guide In this part, we look at where needle valves are actually used and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-15067","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Needle Valve Applications<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/npt-lok.com\/id\/needle-valve-applications\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Needle Valve Applications\" \/>\n<meta property=\"og:description\" content=\"This is the third part of our Needle Valve series. If you haven\u2018t read the first two, here is what you missed\uff1a Part 1\uff1a What a needle valve is and how it works Part 2\uff1a Types of needle valves and selection guide In this part, we look at where needle valves are actually used and [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/npt-lok.com\/id\/needle-valve-applications\/\" \/>\n<meta property=\"og:site_name\" content=\"NPTLOK Instrumentation Tube Fittings and Valves\" \/>\n<meta property=\"article:published_time\" content=\"2026-05-21T07:19:52+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-18T07:21:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/VP-Oil-refineries-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"400\" \/>\n\t<meta property=\"og:image:height\" content=\"540\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"NPTLOK\" \/>\n<meta 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