How to Select Ball Valves   Full-port, Two-Piece.     Ball valve.      T-Port valve. Image Credit: Assured Automation | Cameron | Dwyer   About Ball Valves Ball valves are quarter-turn, straight-through valves that have a round closure element with matching rounded seats that permit uniform sealing stress. The valve gets its name from the ball that rotates to open and...
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Q & A on Ball Valves

We asked our users for their input on Ball Valves. Here are the results of 267 users familiar with Ball Valves.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing ball valve design?
41 answers
Answers:
Earlier Ball valves are limited to temperature applications below 170 degrees due to the selection of soft materials. Now the selection of seating elements coincides with the parent material like steel leads to the versatile selection of ball valves for high temperature services.Virtual development in spraying technologies leads to revolution in ball valves.
~Prem K, Design Engineer, Chennai, India
Hard face treatment technologies. More and more process meets high temp. high flow velocity, erosion condition. For this application, we usually select metal seat ball valve. And hard face treatment technology will influence valve life and process safety.
~Jerry HE, Project Manager, BEIJING, CHINA
For saving in the cost of manufacturing, full proof method of producing spherical balls, and it's seat. By generating form, i.e. through centrifugal casting, and grinding perfectly both seating spherical diameter faces.
~Engineering, Consulting, Kothrud, Pune, India
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Q:
From your perspective, which companies are creating the most innovative ball valves?
37 answers
Answers:
On this moment we are most of the time working with RMA-valves. Although the companies which I'm working with use different makes of valves as Grove, Cameron, WKM etc.
~Peter P.N. van der Gaag, Consultant, Emmen, The Netherlands
Nobody is ready to adopt latest innovative technology, which will reduce the cost by 30%,with more accuracy, because of some unavoidable situations.
~Engineering, Consulting, Kothrud, Pune, India
I typically write my specifications around either Nibco or Apollo valves. Again, I have not been comparing technologies.
~Jay G, Engineer, Endicott, NY
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Applications and UseTop

Q:
What are some of the applications you have used ball valves for?
75 answers
Answers:
- Flow Control - Pressure Control - Level Control - Emergency Shutdown valves - Isolation valves (ON/OFF applications) - Petrochmicals / Oil & Gas, Refinery - Pulp & Paper industries
~Sherif N, Lecturer, Cairo / Giza, Egypt
De frosting systems Chilling system Glycol /Brine shrimp processing equipment fish processing equipment meat processing equipment
~Engineering, Consulting, Grindavík, Iceland
Used in oil & gas product & seawater piping for maintenance, operational, line isolation, shut-off and even flow control applications.
~Engineering, Design, Brentford, United Kingdom
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Q:
Please share with us any “non-standard” applications that ball valves have been used for.
21 answers
Answers:
Such as GE Texaco coal gasification process, valve service: coal slurry feed to gasifier ioslation ball valve. Fluid: coal slurry, Solid Wt.Percent, 60% design Temp.: 350degC Design press.:9MPag Valve size: 10" Stroke time<3S Valve type:Metal seat ball valve, Trunnion type, full bore. Body material :WC6 with surplus liner,thickness>3mm Ball and seat: 316SS HVOF. Packing: Graphite NACE MR0175 material. SIL3 is required
~Jerry HE, Project Manager, BEIJING, CHINA
A ball valve with the ball not fully bored through used as a "dump" valve to remove sand etc from the bottom of a cyclone separator. The valve was fitted with a 180 degree actuator and timer set to dump the deposits. The valve body was drilled for a flush jet to wash the valve ball pocket when it was in the dump position to clear the contents.
~Peter Trevor, Engineer, Whakatane, New Zealand
Using ball valve in heavy steam applications which globe valve was invented for. I used in drum level control of a biler in sugar industry factory, located in Egypt and the controllability of the valve was very nice and attractive even better than globe valve.
~Sherif N, Lecturer, Cairo / Giza, Egypt
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Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of ball valves?
17 answers
Answers:
When using ball valves on chemicals that can decompose the ball will trap a pocket of the liquid in the ball when in the closed position. This can result in the valve breaking under the pressure caused by the decomposition. Drilling a relief hole in the ball so that the pressure can relieve either to waste or back into the process is a simple solution, especially if using plastic valves.
~Peter Trevor, Engineer, Whakatane, New Zealand
For some easy crystallized and polymerized fluid, it is not suitable to take standard ball valve due to a BIG cavity between ball and body. Plug valve is a good choice. If temp. and pressure is very high, you can consider to take top entry ball valve with purge port to avoid the error.
~Jerry HE, Project Manager, BEIJING, CHINA
Some ball valves handle will corrode easily compared to the body . That will cause interrupted operation due to non-availability of better handle.
~Engr. Sansin G. Dio D, Sales Engineer, CEBU, Philippines
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FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
32 answers
Answers:
1. For valve design we shall consider this application because it will meet with different standards. 2 we shall consider process condition 3. valve type ,floating or trunnion ball valve 4. seat material; metal seat or soft seat 5. if special design of seat ring, stem bushing,extened bonnet etc. 6. Operation type. manual, pneumatic, motor etc
~Jerry HE, Project Manager, BEIJING, CHINA
The ability to manage scaling of the ball both in the bore as well as on the sealing faces. Some high scaling applications cause the ball to cement in place and the force to break the scale is beyond the actuator's capability. Secondly scaling of the sealing face of the ball results in seal ride over and subsequent leakage.
~Peter Trevor, Engineer, Whakatane, New Zealand
1- line size 2- connection type 3- process conditions 4- actuating method; either manual / penumatic / electric 5- control element (positioner / solenoid valve) 6- air supply capacity & Pressure
~Sherif N, Lecturer, Cairo / Giza, Egypt
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Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of ball valves?
23 answers
Answers:
Nowadays, all the conventional control valves like globe valves are replaced by ball valves. If at all temperature is not a criteria, ball valves is the best selection to go for ZERO LEAK PROOF valves.
~Prem K, Design Engineer, Chennai, India
Ensure that the valve is correctly applied for the exact process conditions. Ensure temperature is taken into account. In Oil & Gas well applications ensure any sand in the process is taken into account.
~Jeff S, General Manager, Perth, Australia
Get the parameters in selecting ball valves, example get the max temperature, max pressure, flange rating or screwed connection and corrosion guide in selecting the valve materials.
~Engr. Sansin G. Dio D, Sales Engineer, CEBU, Philippines
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Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using ball valves?
21 answers
Answers:
Don't be put off by the higher costs of ball valves as correct selection will justify the cost. This justification can be ease of subsequent automation, time taken to operate (especially if manually operated), savings in wasted fluids when used on water and air hose points.
~Peter Trevor, Engineer, Whakatane, New Zealand
Since the Flow Coefficient value is good, Energy can be consumed compared to other valves, because energy conservation is major threat in future for industrial project builders & end users.
~Prem K, Design Engineer, Chennai, India
For normal application, just focus on brand and certificate. Usually valve quality is ok. For special application, you shall refer to process licensor's suggestion and reference.
~Jerry HE, Project Manager, BEIJING, CHINA
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