How to Select Control Valves     Image Credit: AZCO | Badger Meter | Co-ax valves Control valves are power-operated devices used to automatically modify fluid flow or rate pressure in a process system. The terms 'control valve' and 'throttling valve' are often used interchangeably but there is a distinction between the two. A throttling valve is a valve whose closure element has the ability to start and stop flow as well as stop along any position of the valve...
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Q & A on Control Valves

We asked our users for their input on Control Valves. Here are the results of 88 users familiar with Control 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 control valve design?
12 answers
Answers:
Machining of control elements and sealing surfaces. Actuator and control packages are also improving.
~Bill B., Engineer, North Augusta, SC
The use of bus systems like Profibus PA, DeviceNet, AS-i and similar networking protocols.
~Marketing/Sales, Jhb, South Africa
IQ control, intelligent control valve , IQ range actuators
~Vinoth J, Student, Kanchipuram, India
Mechanical parts used inside the valve.
~Metin Erim, Process Engineer, Mersin, Turkey
Foundry materials, and electronics
~John Dewar, Engineer, Sterling heights, MI
HVAC, beverage bottling companies
~Raul P, Engineer, Barrigada, Fed. state of micronesia
Material resistance science.
~Christian B, Facilities Manager, Labatut, FRANCE
Digital control technology
~Engineering, Faculty/Staff/Student, Abudhabi, United Arab Emirates
Smart positioner
~LEO B, Marketing/Sales, Cagayan de Oro, PHILIPPINES
Wireless,
~Engineer, Odessa, Ukraine
PICV
~Faisal MB, Engineer, Abu Dhabi, United Arab Emirates
PLC
~Engineering, Faculty/Staff/Student, Bridgend, Great Britain

Q:
From your perspective, which companies are creating the most innovative control valves?
13 answers
Answers:
Fisher control valves, Xomox plug valves, Samson valves
~Marketing/Sales, Jhb, South Africa
Rotork controls India private limited, Chennai.
~Vinoth J, Student, Kanchipuram, India
Emerson Fisher Schubert Salzer
~Christian B, Facilities Manager, Labatut, FRANCE
Emerson Process Management
~Metin Erim, Process Engineer, Mersin, Turkey
Fisher, Worchester, Neles
~Bill B., Engineer, North Augusta, SC
Yamatake, Samson, Fisher
~LEO B, Marketing/Sales, Cagayan de Oro, PHILIPPINES
Watts, zurn, matco norca
~Raul P, Engineer, Barrigada, Fed. state of micronesia
Bray Samson Singer
~Faisal MB, Engineer, Abu Dhabi, United Arab Emirates
Fisher,valtech
~Engineering, Faculty/Staff/Student, Abudhabi, United Arab Emirates
Spirex zarco
~Engineering, Faculty/Staff/Student, Bridgend, Great Britain
Fisher, Tyco
~Engineer, Odessa, Ukraine
Plastomatic
~John Dewar, Engineer, Sterling heights, MI
Bray
~Engineering, Design, Indianapolis, IN

Applications and UseTop

Q:
What are some of the applications you have used control valves for?
23 answers
Answers:
Deaerator steam feeding versus pressure control Pressure control on steam Boiler water supply versus level control Medium pressure cleaning water control
~Christian B, Facilities Manager, Labatut, FRANCE
To control the flow rate, maintain the pressure, robotics control techniques, automation technology.
~Vinoth J, Student, Kanchipuram, India
Flow and Pressure control for corrosive and non-corrosive gases in production of flat glasses.
~Metin Erim, Process Engineer, Mersin, Turkey
Water treatment, temperature control, pressure control. Bakeries and plating processes.
~John Dewar, Engineer, Sterling heights, MI
Flow, pressure, level and temperature control in oil and gas applications
~Engineering, Design, Hengelo, Netherlands
Water control, steam control, lime control, acid control
~Marketing/Sales, Jhb, South Africa
Temperature Control Humidity Control Flow Control
~Faisal MB, Engineer, Abu Dhabi, United Arab Emirates
Level control, flow control, pressure control etc.
~Engineering, Design, Gurgaon, India
Controlling the preesure flow and some level
~Engineering, Other, Abudhabi, United Arab Emirates
Servo Hydraulic, Proportional Hydraulic,
~Engineering, Design, Sabac, Serbia-Montenegro
Flow control of air, water or chemicals.
~Bill B., Engineer, North Augusta, SC
Process automation and fluid controls
~Engineer, Odessa, Ukraine
Temperature control, flow, mixing.
~Engineering, Consulting, Normal, IL
Chilled water supply and return
~Raul P, Engineer, Barrigada, Fed. state of micronesia
Hot Water, Chilled Water, Steam
~Engineering, Design, Indianapolis, IN
FLOW & PRESSURE CONTROL
~HAROLD F, Engineer, ABU DHABI, ABU DHABI
HVAC Hydronic Systems
~Engineering, Design, Dallas, NC
Steam,Gas,Fluid
~Engineering, Faculty/Staff/Student, Abudhabi, United Arab Emirates
Not applicable
~Project Management, Mumbai, India
Power plant
~Engineering, Consulting, Suzhou, China
Water gass
~Engineering, Faculty/Staff/Student, Bridgend, Great Britain
WATER
~Technical Support/Services, Maclean, Australia
Steam
~LEO B, Marketing/Sales, Cagayan de Oro, PHILIPPINES

Q:
Please share with us any “non-standard” applications that control valves have been used for.
8 answers
Answers:
It can be used for controlling pressure in automobiles and flow of fuel rate can be controlled to get the maximum fuel efficiency and the performance of the engine can be maintained. It can be implemented in automobiles, due to the increase in demand for the fuel in today's technology concern.
~Vinoth J, Student, Kanchipuram, India
Marking various oils of various densities by adding specific "colour" additives.
~Engineer, Odessa, Ukraine
Liquid temperature control by a control valve.
~Metin Erim, Process Engineer, Mersin, Turkey
Not came across in my applications, yet.
~Faisal MB, Engineer, Abu Dhabi, United Arab Emirates
Geo thermal, well water
~Engineering, Design, Indianapolis, IN
Ming applications
~John Dewar, Engineer, Sterling heights, MI
Water supply
~Raul P, Engineer, Barrigada, Fed. state of micronesia
Waste
~Engineering, Faculty/Staff/Student, Bridgend, Great Britain

Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of control valves?
5 answers
Answers:
Using diaphragm control valves for the handling of gasoline--should have used gate valves. However the use of viton eliminated any disastrous trouble in the future.
~John Dewar, Engineer, Sterling heights, MI
Due to increase in pressure and high temperature valve parts are damaged and leakage occurs and sometimes it may lead to explosion .
~Vinoth J, Student, Kanchipuram, India
Pierced valve within less than one year of usage due to cavitation.
~Christian B, Facilities Manager, Labatut, FRANCE
I have not met yet.
~Metin Erim, Process Engineer, Mersin, Turkey
1. explosions
~LEO B, Marketing/Sales, Cagayan de Oro, PHILIPPINES

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
10 answers
Answers:
My design would be, valve should be manufactured with compact design and new materials to with stand the high temperature as in nuclear reactors, thermal power plant and in petroleum refineries. My wish would be "IQ controls should be made for the INTELLIGENT CONTROLS ".
~Vinoth J, Student, Kanchipuram, India
High degree of inter-changing solutions for each function: closing apparatus, actuator, positioner.
~Christian B, Facilities Manager, Labatut, FRANCE
Software to analyze the performance at various pressures dynamically with all report options.
~Faisal MB, Engineer, Abu Dhabi, United Arab Emirates
By now, we have had what we are expecting.
~Metin Erim, Process Engineer, Mersin, Turkey
I wish they can be programmed
~Raul P, Engineer, Barrigada, Fed. state of micronesia
LESS FREQUENCY OF OPERATIONS
~HAROLD F, Engineer, ABU DHABI, ABU DHABI
Any pressure it would work
~John Dewar, Engineer, Sterling heights, MI
Programmable controller
~Engineer, Odessa, Ukraine
Automation
~Engineering, Faculty/Staff/Student, Bridgend, Great Britain
Smart
~LEO B, Marketing/Sales, Cagayan de Oro, PHILIPPINES

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of control valves?
8 answers
Answers:
Be careful with the arrow posted on the valve bonnet. Observe the instructions even about insulation limitations. Never neglect the cavitation calculation.
~Christian B, Facilities Manager, Labatut, FRANCE
The task should be well defined and clear in order to select the right equipment.
~Metin Erim, Process Engineer, Mersin, Turkey
Avoid damage from external forces, frequent maintenance should be made.
~Vinoth J, Student, Kanchipuram, India
Make sure of correct line pressure and expected pressure drop.
~John Dewar, Engineer, Sterling heights, MI
1. size of control is smaller than size of line pipes
~LEO B, Marketing/Sales, Cagayan de Oro, PHILIPPINES
Choose according to "worst case" scenario
~Engineer, Odessa, Ukraine
Use the vendors expertise.
~Bill B., Engineer, North Augusta, SC
Check their application
~Raul P, Engineer, Barrigada, Fed. state of micronesia

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using control valves?
9 answers
Answers:
Don't choose only on the purchasing price only. Prefer a well known or of proven experience manufacturer. Prefer a manufacturer owning an after sales service in your country or state.
~Christian B, Facilities Manager, Labatut, FRANCE
I am open to advice myself, but would suggest not only to go for cheap valves look onto the price as cost of ownership (capital+cost of maintenance).
~Faisal MB, Engineer, Abu Dhabi, United Arab Emirates
If you have limited staff in your plant and accuracy and reliability is the matter then control valve usage will be the best.
~Metin Erim, Process Engineer, Mersin, Turkey
Always know line pressure and the media that flows through the valve. Also know the environment it will be subjected to.
~John Dewar, Engineer, Sterling heights, MI
Choose the IQ range control valve , it has intelligent control . Choose the high temperature resistant .
~Vinoth J, Student, Kanchipuram, India
Be careful with sizing. Get the vendor to verify the calculations.
~Bill B., Engineer, North Augusta, SC
1.right material. 2.correct valve sizing
~LEO B, Marketing/Sales, Cagayan de Oro, PHILIPPINES
Check for capacities, sizes, adaptability
~Raul P, Engineer, Barrigada, Fed. state of micronesia
First check the fluid properties
~Engineer, Odessa, Ukraine


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