How to Select Water Valves   Image Credit: Armstrong | Dwyer Water valves are designed to handle and control hot water, cold water, ground water, potable water, salt water and/or wastewater.   Classification There are several methods that can be used to classify valves, including the control mechanism and valve function.    Valve Function Valves are a part of many daily- used machines and can perform a variety of functions. The three common valve...
Learn More about Water Valves


Q & A on Water Valves

We asked our users for their input on Water Valves. Here are the results of 98 users familiar with Water 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 water valve design?
13 answers
Answers:
Many of the so called new technology valve designs from what I have seen have too many "rubber" pats in them, e.g. "O" rings.......Not particularly suitable for marine applications, particularly machinery spaces.
~John B, Senior Lecturer in marine engineering, Adelaide, Australia
I think that Resilient Seated Valves would be the way to go as they offer leak tight closure over Metal Seated Valves. However, due to technological restraints there is a size and pressure limitation.
~Ivan De Souza, Marketing/Sales, Mombasa, Kenya
Newer building technologies require tighter controls, which in turn requires better flow control at the valves. Especially evident in LEED certified buildings with water efficiency requirements.
~Jeanne C, Marketing/Sales, Brampton Ontario, Canada
See More Answers
Q:
From your perspective, which companies are creating the most innovative water valves?
13 answers
Answers:
I haven't been finding much innovation, but Siemens is very innovative in their approach to controlling water valves.
~Jeanne C, Marketing/Sales, Brampton Ontario, Canada
Most valves manufactured in USA or ECU countries. Have seen too much rubbish from India and China.
~John B, Senior Lecturer in marine engineering, Adelaide, Australia
The companies that include internal coating for valves.
~Milton P, Engineer, Quito, Ecuador
See More Answers

Applications and UseTop

Q:
What are some of the applications you have used water valves for?
31 answers
Answers:
We are heavily involved with supply and specification of Water Valves for Transmission Mains and Distribution Networks within Kenya.
~Ivan De Souza, Marketing/Sales, Mombasa, Kenya
Desalinizer plants Desmineralized Plant Power Plant Waste Water Treatment Plant Production water plant oil & gas Industry
~Milton P, Engineer, Quito, Ecuador
Steam, sea water, bilge systems, firemains, ballast systems, hydraulics, etc. This has been mainly in the marine area.
~John B, Senior Lecturer in marine engineering, Adelaide, Australia
See More Answers
Q:
Please share with us any “non-standard” applications that water valves have been used for.
8 answers
Answers:
Since I was sixteen years old I have only been dealing with valves in marine applications. After I came ashore I went straight into teaching.........fitting, machining, etc for ten years and twenty two years teaching marine engineering.
~John B, Senior Lecturer in marine engineering, Adelaide, Australia
I've been seeing a lot of valve installation in labs and critical environments requiring full stainless steel bodies, not just ball & stems.
~Jeanne C, Marketing/Sales, Brampton Ontario, Canada
Many water service companies in Kenya tend to use Gate Valves and Butterfly Valves for flow control purposes.
~Ivan De Souza, Marketing/Sales, Mombasa, Kenya
See More Answers
Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of water valves?
6 answers
Answers:
Not really, but then I don't get to follow up on the projects after the estimating and selection stage.
~Jeanne C, Marketing/Sales, Brampton Ontario, Canada
Valves burst due to pressure and wastage of gallons of water.
~KURUSH DARUVALA, Manufacturer, MUMBAI., INDIA
Bursting of valves with pressure rating not properly addressed.
~Y N Cheung, Marketing/Sales, Hong Kong SAR, PR China

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
9 answers
Answers:
Correct materials, particularly for valve seats, discs and spindles because of the need to resist corrosion in sea water. Teaching people how to maintain valves in the correct manner.
~John B, Senior Lecturer in marine engineering, Adelaide, Australia
Larger Pipe Diameters, Higher Pressure Ratings on Resilient Seated Valves and more affordable Pressure Control Valves and systems.
~Ivan De Souza, Marketing/Sales, Mombasa, Kenya
Integrate proof of flow or even flow rate outputs, better monitoring capabilities (i.e. positioners).
~Jeanne C, Marketing/Sales, Brampton Ontario, Canada
Light weight, abrasion and corrosion resistant, durable, premature failure alarm
~Y N Cheung, Marketing/Sales, Hong Kong SAR, PR China
An easy fit valve on a saddle or similar to tee off live lines.
~Wynn G, Marketing/Sales, East london, South africa
To improve and design efficient water valves.
~KURUSH DARUVALA, Manufacturer, MUMBAI., INDIA
Inexpensive motorized actuation.
~Marketing/Sales, Tucson, AZ
Listening tube for buried valves
~Robert H, Plumbing Shop lead, Cheney, WA
Abrasion resistance
~Thane, India

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using water valves?
10 answers
Answers:
They should look for a Valve that will: 1. Have the lowest operation & Maintenance Cost. 2. Have low operating Torque Values 3. have a long Lifespan (AVK give a 15 Year Warranty on their Resilient Seated Valves with an expected lifespan of >50 years)
~Ivan De Souza, Marketing/Sales, Mombasa, Kenya
Be very careful to select the right valve configuration for the right application. This is very critical in many applications where over sized valves lead to poor water efficiencies
~Jeanne C, Marketing/Sales, Brampton Ontario, Canada
Do not buy valves from India or China. Talk to the experts, the manufacturer, not any retailer, hopefully one would then get the correct valve for the job intended.
~John B, Senior Lecturer in marine engineering, Adelaide, Australia
Investigate QA thoroughly Insist on certified performance , especially if price is a major consideration
~Dick G, Senior fire safety engineer, Brisbane, Australia
You get what you pay for, meaning cheap valves break a lot and expensive valves last a lot longer.
~Michael W, Engineer, Rock Hill, SC
1) Check flow and DP characteristics 2) Materials 3) Standards
~Massimo Marchese, Marketing/Sales, Milan (IT), Italy
Use valves with manufacturer track record
~SMR H, Project Manager, NUtley, NJ
Verify application and flow condition
~Y N Cheung, Marketing/Sales, Hong Kong SAR, PR China
Look to your need and select.
~KURUSH DARUVALA, Manufacturer, MUMBAI., INDIA
Buy American
~Robert H, Plumbing Shop lead, Cheney, WA

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of water valves?
8 answers
Answers:
1. Always state The Type of Valve required and the Purpose they require it for. 2. Advise pipeline Conditions such as placement of bends or fittings next to proposed installation, frequency of operation, Pressure ratings, Fluid type and temperature.
~Ivan De Souza, Marketing/Sales, Mombasa, Kenya
Don't fiddle around with things that you do not know anything about. If a valve needs to be serviced get someone who knows what they are doing, it could lead to a disaster particularly in the marine area.
~John B, Senior Lecturer in marine engineering, Adelaide, Australia
Many engineers just use a typical specification, and request the wrong ANSI rating, which can impact pricing significantly
~Jeanne C, Marketing/Sales, Brampton Ontario, Canada
Carefully read the technical brochure Ask supplier for schematics Explain to the supplier your real needs
~Massimo Marchese, Marketing/Sales, Milan (IT), Italy
Give more information of application, to select proper water valves or any other.
~KURUSH DARUVALA, Manufacturer, MUMBAI., INDIA
Resilient seated valves are better than the older double knife edge gates.
~Robert H, Plumbing Shop lead, Cheney, WA
Not to oversize valves that cause energy wastage
~Y N Cheung, Marketing/Sales, Hong Kong SAR, PR China
Get qualified advice
~Dick G, Senior fire safety engineer, Brisbane, Australia


Related eNewsletters
See More

Also on GlobalSpec...
  • Receive email updates on new products and suppliers of interest to you
  • Online, interactive conferences / trade shows featuring latest news and industry trends
  • CR4
    Q&A and discussion for the engineering, scientific, and technical community
  • Engineering and scientific news from hundreds of sources
  • Industrial manufacturers and distributors