Rising stem ball valve substitute
Rising stem ball valve substitute
(OP)
Our customer has specified [u]rising stem ball valves[/u] for some applications. These are hard to come by and only manufactured by a very, very limited number of companies.
Does anybody know of ball valves that have similar properties, i.e. very good tightness and wear properties?(...at least as claimed by the manufacturer.)
Does anybody know of ball valves that have similar properties, i.e. very good tightness and wear properties?(...at least as claimed by the manufacturer.)





RE: Rising stem ball valve substitute
Worcester also makes some pretty good ball valves.
These are rotary actuated ball valves.
Unfortunately, I am not familiar with rising stem ball valves.
RE: Rising stem ball valve substitute
RE: Rising stem ball valve substitute
Cooper Cameron owns the lot. Only one source.
RE: Rising stem ball valve substitute
RE: Rising stem ball valve substitute
Would a rising-stem ball valve be an on/off device like most ball valves or a throttling device like Fisher's excellent V-Ball line?
David
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
The harder I work, the luckier I seem
RE: Rising stem ball valve substitute
Problem: CCV has bought up all competitors that I know of.
RE: Rising stem ball valve substitute
Their design is certainly good. I belive that other ball valve and ball valve design are just as good.
If you don't want a CCV valve, I believe Flowserve is still its own company. They carry the Durco and Worcester lines of valves, which are also very good.
As zdas04 can confirm, Fisher ball valves are also very good.
Is this what you are looking for?
RE: Rising stem ball valve substitute
The Orbit valve has a unique configuration that is similar to only a few valves. The Tru-seal plug valve by Orbit has a somewhat similar plug motion that lifts plug away from seat before it turns to align the plug port with the flow.
The General Valve Twin-seal plug valve, and the Homestead Lever Seald plug valve, and the Stockham Wedge-plug valve were other valves that lifted the plug away from seat before turning the plug to align port with the flow.
I had seen some Orbit rising stem ball valves at the bottom discharge of clay treaters. The application might otherwise have used Fetterolf or Strahman flush bottom outlet valves. The Orbit valve seem to have been applied mostly in the oil patch / gas production industry such that only the carbon steel body has had significant production. The Orbit valve has a very good stem packing design with injectable PTFE paste sealant for maintenance of tightness.
RE: Rising stem ball valve substitute
One more unusual ball valve design that might fit the application where the Orbit valves are used. There is the HEMIWEDGE ball valve that has a a fixed position ball core with a hemispherical wedge that rotates between the ball and the body. A simple way to visualize it might be to take a knife gate valve and form the gate into curved plate that performs the shutoff. The orginal company has been acquired by Shumate Indus., see webpage,
www.hemiwedge.com
I have yet to see one of these in service or as a sample. Their applications list included geothermal steam and brine, which could be very severe. Of course price is not mentioned. Maybe someone else has seen or used these.
RE: Rising stem ball valve substitute
As you know there were a few manufacturers of the rising stem ball valve:
The Orbit, the Dresser Omega and Control Seal from The Netherlands, all these true rising stem ball valve manufacturers are now part of Cooper Cameron.
As a spin off from this merger a new Dutch manufacturer has started: Nether Seal, their site is www.netherseal.nl
As you might be aware, both Orbit nor Omega have a below seal design, Nether Seal does!
Hope it helps you find an alternative for CCV, good luck.
Marcel
RE: Rising stem ball valve substitute
Just an alternative, you cannot get these monagramed to API6D since it doesn't cover remanufactured valves but they'll certify that it meets 6D end to end & testing.
RE: Rising stem ball valve substitute