Sites: GlobalSpec.com | GlobalSpec Electronics | CR4 | Electronics360
Login | Register
The Engineer's Place for News and Discussion®

Previous in Forum: What's Better: Laminating or Matrix-Joining Metal Sheets?   Next in Forum: Isobaric Versus Isovolumetric-Combustion?
Close

Comments Format:






Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







10 comments
Participant

Join Date: Dec 2006
Location: Jakarta, Indonesia
Posts: 1

Ball Valve Materials for Sandy Sea Water / Slurry Service

12/04/2006 12:47 AM

We plan to install the new ball valves in Sand jetting /Wash Clenanig system to replace the existing ball valves. Experienced that the existing Carbon Steel Ball vaves, A182GR F316 steel ball & stem materials found wash out due to sand erossion

Please advice what is the materials (ball & stem) that suitable for the above sandy sea water/slurry service ?

Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Guru
Hobbies - HAM Radio - New Member United Kingdom - Big Ben - New Member Fans of Old Computers - Altair 8800 - New Member Canada - Member - New Member

Join Date: Jun 2006
Location: Toronto
Posts: 3583
Good Answers: 94
#1

Re: Ball Valve Materials for Sandy Sea Water / Slurry Service

12/04/2006 11:03 PM

steel is hard, sand is harder. A tougher stuff like carbide will work by not being abraded. A rubbery material, like nylon, may work by being tougher and not getting abraded.

People that already make this equipment know what works best.

Often valves like this are made with replacement wear parts that you change

__________________
Per Ardua Ad Astra
Register to Reply
Participant

Join Date: Nov 2006
Location: Surabaya, Indonesia
Posts: 3
#2

Re: Ball Valve Materials for Sandy Sea Water / Slurry Service

12/04/2006 11:03 PM

It's better you send the detail specs to manufacturer, they will calculated it all for you.


By the way......kerja dimana pak ?

Register to Reply
Active Contributor

Join Date: Nov 2006
Posts: 23
#3

Re: Ball Valve Materials for Sandy Sea Water / Slurry Service

12/05/2006 12:27 AM

Try pyrolytic carbon. It is nearly as hard as diamond and is easy to make into shereical shapes. It should withstand the abrasion of sand. It is the same stuff used to coat nuclear fuel pellets and to make heart valves.

Register to Reply
Associate
Engineering Fields - Manufacturing Engineering - New Member Engineering Fields - Mechanical Engineering - New Member

Join Date: Oct 2006
Location: China
Posts: 39
#4

Re: Ball Valve Materials for Sandy Sea Water / Slurry Service

12/05/2006 12:30 AM

You have to think of it with 2 ways.One way you can consider from valve.You can choose material of ball and stem.also you may not use ball valve.Other type valves can prevent to sandy sea water.Another way is by filter.If you use filter before the valve,the sandy water will be clean.

__________________
william.bei
Register to Reply
Guru
Hobbies - HAM Radio - New Member United Kingdom - Big Ben - New Member Fans of Old Computers - Altair 8800 - New Member Canada - Member - New Member

Join Date: Jun 2006
Location: Toronto
Posts: 3583
Good Answers: 94
#5
In reply to #4

Re: Ball Valve Materials for Sandy Sea Water / Slurry Service

12/05/2006 12:46 AM

I think they want the sand to act as water carried sand blast type of cleaner.

In air blast uses of sand they use ceramic parts. Possibly ceramic inserts in the valves?

__________________
Per Ardua Ad Astra
Register to Reply
Associate
Engineering Fields - Manufacturing Engineering - New Member Engineering Fields - Mechanical Engineering - New Member

Join Date: Oct 2006
Location: China
Posts: 39
#8
In reply to #5

Re: Ball Valve Materials for Sandy Sea Water / Slurry Service

01/27/2007 2:38 AM

We have done ceramic ball in bearing,not used in ball valve.But i think it will be posible to make a ceramic ball instead of brass ball in ball valves.It's more difficuty process inserting ceramic part.

__________________
william.bei
Register to Reply
Anonymous Poster
#6

Re: Ball Valve Materials for Sandy Sea Water / Slurry Service

12/05/2006 9:07 AM

We use sliding gate valves for flyash and some liquid slurry (mud) applications with good success. However I've also been looking at replacing some of the gates with pinch valves. You might look at www.rfvalve.com.

Register to Reply
Guru
Hobbies - HAM Radio - New Member Popular Science - Weaponology - New Member United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member

Join Date: Jan 2006
Location: Saint Louis, Missouri USA
Posts: 1932
Good Answers: 9
#7

Re: Ball Valve Materials for Sandy Sea Water / Slurry Service

12/05/2006 3:44 PM

Check into valves designed for "the oil patch", petroleum or crude oil drilling, exploration, and production. Crude oil often has a lot of "junk" mixed in, sand, dirt, rock, solid carbon, etc.

Indonesia has a lot of oil production I believe, so you should not have any problem obtaining these valves.

__________________
"What, me worry?" Alfred E. Neuman
Register to Reply
Active Contributor

Join Date: Apr 2007
Posts: 14
#9

Re: Ball Valve Materials for Sandy Sea Water / Slurry Service

04/20/2007 1:52 PM

Stick with 316 and try Kolsterising the balls, stem and seat

Register to Reply
Anonymous Poster
#10

Re: Ball Valve Materials for Sandy Sea Water / Slurry Service

05/09/2007 7:44 AM

I was a service engineer for several valve companies and have found that for this type service ball valves are not suitable, no matter what type of material trims used.

I would suggest u use the Hindle Hammer line blind or a pinch valve.

I do not think any manufacturer has ever come up with an answer for this type service!

Register to Reply
Register to Reply 10 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Copy to Clipboard

Users who posted comments:

Anonymous Poster (2); aurizon (2); Belius (1); BillM (1); Lee (1); STL Engineer (1); william.bei (2)

Previous in Forum: What's Better: Laminating or Matrix-Joining Metal Sheets?   Next in Forum: Isobaric Versus Isovolumetric-Combustion?
You might be interested in: Ball Bearings, Ball Transfer Units (BTU), Ball Screw Repair Services