{"id":3468,"date":"2026-09-29T05:17:48","date_gmt":"2026-09-28T21:17:48","guid":{"rendered":"http:\/\/www.all-heatexchangers.com\/blog\/?p=3468"},"modified":"2026-09-29T05:17:48","modified_gmt":"2026-09-28T21:17:48","slug":"what-is-the-opening-and-closing-time-of-a-solenoid-valve-4368-c9b35d","status":"publish","type":"post","link":"http:\/\/www.all-heatexchangers.com\/blog\/2026\/09\/29\/what-is-the-opening-and-closing-time-of-a-solenoid-valve-4368-c9b35d\/","title":{"rendered":"What is the opening and closing time of a solenoid valve?"},"content":{"rendered":"

Hey there, if you\u2019ve ever messed around with fluid or gas control systems\u2014like in an industrial machine, a HVAC setup, or even a watering system\u2014you\u2019ve probably seen a solenoid valve. If you\u2019ve ever wondered how fast it actually opens or closes, you\u2019re not the only one. I\u2019m with [My Company, just skip the name link\/blank], been selling solenoid valves for over 8 years, and this is one of the questions I get nonstop, from new fabricators to old heads who swear they \u201cknow how these work\u201d till they realize their 10-year-old valve is way slower than it used to be. Let\u2019s break this down straight, no fancy jargon, no copy-pasted tech sheets\u2014just real talk from someone who\u2019s shipped thousands of these things. Solenoid Valve<\/a><\/p>\n

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First off, let\u2019s get the basics right before we dive into times. A solenoid valve\u2019s whole gig is using electricity to move a plunger (the core of the solenoid) that opens or blocks a flow path. The \u201copening time\u201d is the seconds (or, way more likely, milliseconds) it takes from when you flip the switch or send the electrical signal to when that flow path is fully open. Closing time is the opposite\u2014when the signal cuts off, how long till the valve is tight and no more fluid\/gas gets through. Most people mix these up, but they aren\u2019t always the same. In fact, that\u2019s one of the most important things I remind every customer when they call asking for \u201cfast valves\u201d\u2014don\u2019t just care about opening speed, closing speed matters more if your system needs precise shutoff. For example, if you\u2019re dosing chemicals in a lab or stopping a high-pressure jet instantly, a slow close = messy overflows or wasted product.<\/p>\n

Now, what\u2019s the typical range here? Most of the standard, run-of-the-mill valves I stock\u2014like the 12V DC ones we use for small pneumatic lines or water dispensers\u2014have opening times between 10 ms and 100 ms. Closing time? A little faster, usually 5 ms to 80 ms. Wait, that\u2019s tiny\u2014like, faster than the blink of an eye (which is roughly 100 ms for humans). But hold up, that\u2019s for the tiny, low-voltage, low-pressure ones. If you step up to industrial-grade valves, like the ones that control 100 PSI of water or air, or big 240V AC valves for manufacturing lines, the times jump way up. I\u2019ve seen a lot of 2-inch pilot-operated valves (those are the ones that use a little internal pressure to move the plunger instead of direct power) have opening times of 200 ms to 500 ms, and closing times around 150 ms to 400 ms. And before you ask: yes, there are ultra-fast ones too. The fast-acting ones we sell for things like spray nozzles or medical fluid handling? They can get opening times down to 1 ms, closing to 0.5 ms\u2014they\u2019re pricey, but worth it when you can\u2019t wait a split second.<\/p>\n

But here\u2019s the thing no tech sheet will tell you: those \u201ctypical times\u201d are just that. A bunch of numbers that work in a lab under perfect conditions. Real-world stuff changes that more than you\u2019d think. Let\u2019s run through the main factors that mess with opening and closing time, because this is where 90% of my customers go wrong. First: voltage and current. If your power supply is wobbly\u2014like if you\u2019re running the valve off a dying battery or a sketchy outlet that drops 2V when you turn on other machines\u2014your solenoid won\u2019t have enough punch to yank that plunger open fast. I had a customer last month who complained his new valve was \u201ctaking forever to open\u201d and was blaming the part. Turned out his control board was only sending 9V instead of the 12V the valve needed. Cranked that up, and it opened in 12 ms like it was supposed to. Second: pressure of the fluid\/gas going through it. Low pressure = super fast, high pressure = way slower. If you have a valve rated for 50 PSI and you run it at 80 PSI, that plunger has to push against more force, so it takes longer to move. Same goes for fluids with thick viscosity\u2014like oil instead of water. Oil doesn\u2019t slip past parts as easy, so opening\/closing time goes up by 20-50% sometimes. Third: valve size and type. Like I mentioned earlier, direct-acting valves (the tiny ones where the plunger moves straight against the flow) are way faster than pilot-operated ones for big lines. Pilot valves rely on a small differential pressure to move the main plunger, so all that extra plumbing adds time. Also, wear and tear! If you\u2019ve had a valve for 5 years, the plunger might have gunk buildup, or the spring that pushes it closed gets weak, or the seal wears down. I see this all the time\u2014customers call saying their valve is \u201cbroken because it\u2019s slow\u201d and it just needs a $10 seal kit, not a whole new $200 valve. Last factor: temperature. Cold weather makes plastic seals stiff, so movement slows down. Hot weather makes lubricants inside the valve thin, so parts drag a little\u2014both can tweak times by 10-30% depending on the valve.<\/p>\n

Wait, also\u2014let\u2019s clarify a common mix-up between \u201copening time\u201d and \u201cresponse time.\u201d A lot of customers use \u201cresponse time\u201d interchangeably, but technically response time is the total time from when the electrical signal hits the solenoid to when the valve is fully open or fully closed. So that\u2019s opening time for the on switch, closing time for the off switch. That\u2019s the number you should care about when sizing a valve for your system, not just the individual opening\/closing numbers.<\/p>\n

Another big question I get: \u201cDo I need a valve with super fast times, or is standard okay?\u201d Let\u2019s use real examples. If you\u2019re building a coffee machine that dispenses water\u2014standard 50 ms opening time is totally fine, no one will notice a 0.05 second delay. If you\u2019re making a paint sprayer that needs to stop spraying instantly to avoid overspray? You want 10 ms opening, 5 ms closing, no exceptions. If you\u2019re running a conveyor system that needs 10 valves to open at exactly the same time to move parts? You might need matched valves, because even a 20 ms difference between two valves will throw the line off. I had a automotive parts customer once who had a whole line shut down for 3 hours because they used un-matched valves for their glue dispensing\u2014one opened 100 ms slower, so they had a batch of 50 parts with missing glue. Worth paying a little extra for matched valves back then.<\/p>\n

Now, let\u2019s talk about how manufacturers test these times, because not all tests are equal. Some guys test at 25\u00b0C, 50 PSI, clean water, no gaskets to drag\u2014those are the \u201cbest case\u201d numbers on the box. Other manufacturers do real-world testing with the actual fluid and pressure their valves will be used for, so their times are more accurate. That\u2019s why when I recommend a valve to a customer, I never just send them the tech sheet. I ask them: what\u2019s your power supply voltage, what\u2019s the line pressure, what fluid are you using, what temperature is it, and what\u2019s the application? Because a valve that works great for a water line will suck for a high-pressure air line.<\/p>\n

Wait, can you adjust opening and closing times? That\u2019s another thing people ask. The short answer: not on the standard valves I sell. Some industrial valves have adjustable flow controls built into the ports, so you can slow down how fast the fluid comes in and out, which in turn slows the plunger movement (and thus opening\/closing time). But that\u2019s more for cushioning\u2014like if you have a valve that\u2019s slamming shut too fast and wearing out, not for speeding it up. If you need faster times, you have to get a valve rated for faster operation. No workarounds there, sadly.<\/p>\n

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Let me wrap this up with some practical takeaways, because I don\u2019t want you leaving here with a bunch of numbers and no clue what to do next. First: don\u2019t just look at a valve\u2019s \u201ctypical time\u201d on the website or box. Cross-reference it with your actual operating conditions (pressure, fluid, voltage). If you\u2019re running a non-standard setup, ask the supplier for real-world test data for that exact scenario. Second: if closing speed is critical (most of the time it is), don\u2019t just compare opening times. A valve that opens fast but closes slow is useless for shutoff applications. Third: if you\u2019re replacing an old valve and it\u2019s suddenly slower, don\u2019t assume it\u2019s broken\u2014check your power, your line pressure, and for gunk buildup in the valve. Most of the time it\u2019s not the valve itself, it\u2019s the surrounding system. And finally: if you\u2019re not sure what you need, just hit me up. I don\u2019t push the most expensive valve if a $20 standard one works. I\u2019ve been doing this long enough to know that 9 times out of 10, the customer\u2019s issue is not the valve\u2019s time spec\u2014it\u2019s them picking the wrong one for their setup. If you need help sizing, testing, or just have a question about a valve you already have, I\u2019m here\u2014no pressure, no sales pitch, just straight answers.<\/p>\n

Butterfly Valve<\/a> REFERENCES<\/p>\n

    \n
  1. Solenoid Valve Fundamentals, National Fluid Power Association, 2021<\/li>\n
  2. "Solenoid Valve Response Time: Factors and Testing Methods," Automation World, 2022<\/li>\n
  3. Industrial Solenoid Valve Application Guide, Emerson Automation Solutions, 2023<\/li>\n
  4. "Viscosity and Temperature Effects on Valve Operation," Journal of Fluid Control, 2020<\/li>\n<\/ol>\n
    \n

    Shandong Yuhong Valve Co., Ltd.<\/a>
    Shandong Yuhong Valve Co., Ltd. is one of the most professional solenoid valve manufacturers and suppliers in China. With abundant experience, we warmly welcome you to wholesale high quality solenoid valve at competitive price from our factory. Good service and punctual delivery are available.
    Address: Intersection of Chuangye Avenue and Huanghe Road, Zhangdian District, Zibo City, Shandong Province
    E-mail: info@yuhong-valve.com
    WebSite:     https:\/\/www.yh-controlvalve.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    Hey there, if you\u2019ve ever messed around with fluid or gas control systems\u2014like in an industrial … What is the opening and closing time of a solenoid valve?<\/span>Read more<\/a><\/p>\n","protected":false},"author":212,"featured_media":3468,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3431],"class_list":["post-3468","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-solenoid-valve-43c4-c9eece"],"_links":{"self":[{"href":"http:\/\/www.all-heatexchangers.com\/blog\/wp-json\/wp\/v2\/posts\/3468","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.all-heatexchangers.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.all-heatexchangers.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.all-heatexchangers.com\/blog\/wp-json\/wp\/v2\/users\/212"}],"replies":[{"embeddable":true,"href":"http:\/\/www.all-heatexchangers.com\/blog\/wp-json\/wp\/v2\/comments?post=3468"}],"version-history":[{"count":0,"href":"http:\/\/www.all-heatexchangers.com\/blog\/wp-json\/wp\/v2\/posts\/3468\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.all-heatexchangers.com\/blog\/wp-json\/wp\/v2\/posts\/3468"}],"wp:attachment":[{"href":"http:\/\/www.all-heatexchangers.com\/blog\/wp-json\/wp\/v2\/media?parent=3468"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.all-heatexchangers.com\/blog\/wp-json\/wp\/v2\/categories?post=3468"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.all-heatexchangers.com\/blog\/wp-json\/wp\/v2\/tags?post=3468"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}