INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS
If you are looking for more details, kindly visit full port ball valve prices china.
FIRST NAME
*
LAST NAME
*
*
MESSAGE
*
ADDITIONAL DETAILS
Thanks. We have received your request and will respond promptly.
Log In
Are you an
Engineering professional?
Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.
Promoting, selling, recruiting, coursework and thesis posting is forbidden.
Eng-Tips Posting Policies
STANDARD VS REGULAR PORT
thread408-193930 Forum Search FAQs Links MVPsForum
Search
FAQs
Links
MVPs
(Mechanical)
(OP)
2 Aug 07 14:22What is the difference in a "Standard" port and a "Regular" port? "Full Port" I understand. For example:
Apollo Ball Valve 70 series (70-105-01) is a "standard port", the 32 Series (32-105-01) says its a "regular port". I can't find info there, so I'm posting here. THANKS!!!
(Mechanical)
2 Aug 07 18:14The terms "Standard Port", "Reduced Port", and "Regular Port" are interchangeable and they all mean "Not Full Port".
Marketers in this incredibly competitive market are doing anything they can to cause a conversation where they can extol the virtues of their valves. Sometimes it backfires (i.e., if I find a web site vauge I close the web browser and go somewhere else, other folks have more patience and will call, it probably balances).
David
(Mechanical)
3 Aug 07 10:43What zdas04 stated about the marketers is very true. Don't get caught up in the jargon used for valves, be sure to size the proper valve based on the pipe line dimensions, pressures, and flow rates you need.
I checked the Apollo site, and the site does show dimensions for the ports if you dig a little deeper. If I was reading right, the 70-105 had a 22.098 mm port and the 32-105 had a 19.05 mm port.
Regards,
Fred
(Mechanical)
(OP)
3 Aug 07 10:55Thanks guys. I appreciate your help. My customers do too!
Melissa
(Mechanical)
7 Aug 07 08:54Zdas04 was right about the market being competitive. We run into the Wal-Marting of the marketplace all the time. That's why almost all the manufacturing is outsourced to third-world countries, now. Too many customers don't care what they get as long as it's cheap.
A "regular port" valve actualy causes very little restriction to the flow and it is substantially less expensive than a full port valve with the same connection size. Also a regular port valve requires less torque to turn so you use a smaller, less expensive actuator if the valve is to be automated. That is not to say that regular port valves are cheap. They may have any number of features that tailor them for success in certain applications.
There are times when you NEED a full port valve. If you are using it to isolate a probe insertion into a hot tap, or if you intend to pig the line, for example. Almost never is a full-port valve justified merely on the basis of flow restriction.
If all you (or your purchasing clerk) cares about is price, just specify a x-inch ball valve and you will get a cheap, commodity-grade valve that may actually work for 5 or 6 cycles. And in fact, a lot of ball valves are installed and forgotten and may only be cycled 5 times in thir entire service life. If quality matters, specify the features that will ensure the success of the valve in your application. The rest of zdas04's remark causes me a little concern. Valves are NOT all the same and specifying engineers are not all fully familiar with the features and benefits of the products. Marketing guys ARE hired to write hot copy to get your attention so you will see how their valves are different from the other guys' valves. Sometimes these differences really really matter. Sometimes it's OK to let your purchasing clerk buy the cheapest thing he can scrounge from the reject bin at Lowe's. But there are times you NEED <pick a feature>. Sometimes people's lives depend upon the specifying engineer sorting through the market and speaking with sales representatives to find the product that will provide the greatest assurance of safety. Or if could be other features that are significant for a specific application. If that wasn't true there would be no need for the Engineering tips forum...
(Mechanical)
7 Aug 07 12:32JimCasey,
I don't disagree with you at all. The second part of my post is talking about marketing behaviour, not valve performance. I'm certainly not saying that each manufacturer's valves don't have something that sets them apart from the rest and may need some "extolling".
I know that I've rejected good valves because I couldn't get answers to my questions without going farther than a web page. I've also found some very good valves from web pages, and decided to buy them before I ever talked to a salesman (that makes the sales call really easy).
When I started in this business, my predecessor always specified "#### 4-inch ball valves", and got what he deserved. As I was trying to fix some valves that had leaked through, I assumed that all 16-inch valves would be built to API specs and any ANSI 300 valve would fit in the holes, I didn't see any reason to measure the installed valve. Shame on me, the replacement valve was built to API specs and was 4-inches too short to fit where the generic non-API valve came out. We discovered that with the system blown down and the old valve on the ground. It was the barrel-isolation valve on a pig launcher and there really wasn't an easy way to fix it (we ended up cutting the barrel and adding a 4-inch pup and dealing with some concrete supports) what a mess. At that point I made it my mission to never spec generic valves again. Now I give the purchasing guy a manufacturer, model, and all required parameters to get the valve that will work for now and the future.
David
Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.
Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.
Click Here to join Eng-Tips and talk with other members! Already a Member? Login
Are you interested in learning more about 3 way ball valve from china manufacturer? Contact us today to secure an expert consultation!
Full port ball valves provide almost no resistance to flow through the valve
Published: April 19, 2017
Last updated: December 30, 2021
Summary: The flow path through a full port valve body is the same size as the flow coming into the valve and leaving it via its tube or pipe connections. Standard port valves have smaller bodies overall with a corresponding narrowing inside the valve body.
Introduction
Questions about the differences between full port or full bore valves and standard valves come up pretty regularly for us. I am going to try to answer some of them in this post. I’ve included some related information in the form of a short FAQ list. These FAQs should help with some of the technical issues and vocabulary. My intention is to provide a description of the differences between full port and standard port ball valves and an overview of ball valve type miniature valves.
What is a ball valve?
Generally, valves are devices used to control the flow of a gases or liquids through a closed tube or pipe system. Flow through a valve can be relatively unobstructed when it is completely open. Flow stops when the valve is completely closed.
A ball valve consists of a valve body with a rotatable ball in it. This ball or sphere has a hole or bore through its center. The handle on a ball valve opens the valve when it turns the ball to align with the pipe or tube so that it is pointing the same direction as the pipe. This allows flow to pass through it. The valve handle can also turn the ball so that the bore is at a right angle or 90 degrees to the flow. This closes the ball valve.
Ball valves are tough, durable and reliable. They close securely even after long periods of not being used. These qualities make them an excellent choice for shutoff and control applications. Ball valves are unable to provide fine flow control or throttling. Gate, globe or needle valves are more appropriate for these situations.
Miniature ball valves come in a wide selection of specifications and options. Get some tips and insights for selecting a suitable miniature ball valve for your application.
What is a full port or full bore ball valve?
The inner diameter of the pipe coming into a full bore valve is the same diameter as the flow path through the valve body and out through the other side of the valve. Most full bore valves are two-way, quarter-turn ball valves.
Learn more about ISM’s stainless steel and brass full port ball valve series
Brass and stainless steel provide performance advantages in higher temperature and pressure applications, but valves made of engineering-grade plastics also have their place. Find out more about what matters when choosing between plastic and metal ball valves.
What is a standard port or standard bore ball valve?
A standard bore valve body is about the same diameter as the pipe or tube coming into and exiting it. The working part of the valve is the ball inside the valve body. Since the working part of the valve fits inside the valve body, the bore through the valve ball is smaller than the diameter of the valve’s connecting pipe or tube.
The following are some FAQs related to valve basics, ball valves and selection tips
What are valve ports?
The ports of a valve are generally understood to be the connections that carry the flow of the liquid or gas into the valve and away from it.
What is a two-way valve?
A 2-way valve is any type of valve with two ports or openings. The openings are usually called the inlet and outlet ports respectively. Two-way valves are used for basic on or off applications but they can also be used for more complex flow control. Ball valves are a type of two-way valve.
Why are so many ball valves the standard port or bore type?
The reason most ball valves use standard bores is that this design is relatively compact. It is not unusual for space limitations to be a factor when choosing a valve. Standard bore valves also require less material to make the valve body. Higher material and manufacturing costs can be significant when the body material used is something like stainless steel or Hastelloy.
What is a quarter-turn valve?
Multi-turn valves require multiple turns of the handle to fully open or close the valve. Spigots on the outside of houses are a good example of a multi-turn valve.
Three-way ball valves are multi-port valves with three valve ports. They usually function as diverter or mixing valves. If you're interested in finding out more about three-way and other multi-port ball valves, check out this article. There are tips and insights to help with selecting the correct valve for your application.
Why are ball valves used so widely?
Ball valves are not well suited for regulating flow. This is because ball valves use a relatively soft ring-shaped valve seat to create a tight seal. When they are partially open, pressure is applied to only a portion of the valve seat. This can cause the valve seat to warp and reduce its ability to provide a good seal causing it to leak.
Another reason ball valves are not a good choice for regulating flow is that they create turbulence and possible cavitation when used this way. Turbulence and cavitation reduce flow rates, increase noise and vibration and can even damage valves and piping.
What is flow turbulence?
Pressure difference across a valve can cause turbulent or irregular flow on the downstream side of the valve.
System conditions and valve design can increase or reduce turbulent flow. Generally, there will always be some turbulent flow on the downstream end of a standard bore ball valve, especially when it is just opening and just closing.
What is cavitation?
Flow creates a pressure difference across a valve. Rapid pressure drop across a valve can cause cavitation. Cavitation is the rapid formation and collapse of vapor bubbles within a liquid. When this happens, the collapse of these tiny vapor bubbles could erode the valve and pipe material around them. This video from the IET Institute for Energy Technology at HSR University of Applied Sciences Rapperswil in Switzerland provides a detailed explanation.
The pressure difference across a valve is greater for a standard bore ball valve than it is for a full bore valve. Full bore ball valves tend to have little or not pressure difference across the valve.
What is valve bore size?
Valve bore size is the size of the hole through the ball, the working part of a ball valve. The difference between a standard and a full bore ball valve is directly related to the size of the ball and its bore. Full port bore sizes are the same as the inner diameters of both the valve ports and the pipe used. Standard port bore size is about the same as the next smaller pipe size.
An example to help make this clearer
The bore in a 3/4-inch size full bore ball valve is 3/4-inch in diameter. The bore in a 3/4-inch size standard bore ball valve is 1/2-inch. This is because the balls in standard bore valves are sized in proportion to their valve bodies and bore sizes. In practice, this makes the bore diameter of a standard 3/4-inch ball valve about the same as the inner diameter of 1/2-inch pipe, the next smaller pipe size.
What is throughput and how is it related to flow?
Fluids and gases flow readily from one place to another with relatively low force. Measuring the flow of gases is a little trickier than measuring liquid flow because gases can be compressed. Generally, though, the flow or throughput of a system is the volume of fluid or gas that can pass through it in a given amount of time.
What is flow coefficient (CV)?
The flow coefficient or CV is a measure of the resistance to flow of any given part of a fluid system. It is used to calculate the length of straight pipe equal to the flow resistance created by an elbow or valve or any other component that affects the flow because of friction, turbulence or flow restriction.
A high flow coefficient means a low resistance to flow and a low flow coefficient means high resistance to flow.
A full bore ball valve has a low flow resistance (high flow coefficient), about the same as a straight piece of pipe. This means a full bore ball valve causes very little pressure drop across the valve. The flow path through a standard bore ball valve is narrower with a higher resistance to flow (lower flow coefficient). This resistance to flow causes a larger pressure drop across the valve.
Wikipedia has a concise but dense explanation of flow coefficient. As a plus, it includes the metric system version, flow factor. The more technically minded of us here at ISM are partial towards The Engineering ToolBox version because it includes online calculators for air, gases and classes of steam.
Conclusion
Whew, you made it. Like me, you probably just read the intro and skimmed through the rest. However much you decided to take in on this pass, I hope you come away from this with some useful information. I hope you also find the short FAQ to be a handy reference to come back to. A quick and simple explanation of full port vs standard port ball valves plus an introduction to ball valve design.
ISM is proud of our extensive selection of miniature ball valves, so I invite you to spend some time browsing through the miniature valve section of our catalog. You might be surprised at how wide ranging our ball valve selection is.
Other related blog posts
Take Advantage of Our Expertise
We offer a line of ideas, so if you don't see it - ask for it. Let us turn your ideas for pneumatic or fluidic circuitry assemblies into reality — from conception to finished product.
Contact Us
« Go back to the blog homepage
The company is the world’s best large diameter flanges supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.