"Large" Full-Bore Trunnion Ball Valves - PVC
"Large" Full-Bore Trunnion Ball Valves - PVC
(OP)
Hello all,
I'm having some problems finding full-bore trunnion ball valves in PVC. I am in need of 8in and 10in valves with 150# flanged connections. The system requires the use of thermoplastic valves, PVC would be ideal.
TVI has strong union valves, but only up to 6in, which appears to be the same with a lot of other vendors. Plenty of butterfly valves that would work, expect for the fact that the system will be pigged regularly. Anyone know of any vendors short of us having to get them custom made?
Thanks!
I'm having some problems finding full-bore trunnion ball valves in PVC. I am in need of 8in and 10in valves with 150# flanged connections. The system requires the use of thermoplastic valves, PVC would be ideal.
TVI has strong union valves, but only up to 6in, which appears to be the same with a lot of other vendors. Plenty of butterfly valves that would work, expect for the fact that the system will be pigged regularly. Anyone know of any vendors short of us having to get them custom made?
Thanks!





RE: "Large" Full-Bore Trunnion Ball Valves - PVC
Then I found a 10-inch PVC (and a 12 and a 14 and an 8) at http:/
It took nearly 5 minutes.
David
RE: "Large" Full-Bore Trunnion Ball Valves - PVC
David
RE: "Large" Full-Bore Trunnion Ball Valves - PVC
In my searching I did not find the valves from NBEngineers, that will be a worthwhile one for me to follow up (although, PP is going to be seriously expensive). Thanks!
On the gate valves, I was trying to stay away from those if possible, but they seem to be more readily available (I had come up with lots of manufacturers that meet my needs in gate type) and reasonable cost for their size.
RE: "Large" Full-Bore Trunnion Ball Valves - PVC
RE: "Large" Full-Bore Trunnion Ball Valves - PVC
RE: "Large" Full-Bore Trunnion Ball Valves - PVC
"Sharing knowledge is the way to immortality"
His Holiness the Dalai Lama.
http://waterhammer.hopout.com.au/
RE: "Large" Full-Bore Trunnion Ball Valves - PVC
That's a winner! Looks perfect for our application, I've seen smaller versions of those (air operated) - didn't realize they made big-boy versions. Thanks!
RE: "Large" Full-Bore Trunnion Ball Valves - PVC
what is the reason for the need of the valve to be plastic?
RE: "Large" Full-Bore Trunnion Ball Valves - PVC
The system is a continuous service 30K liter sea-water/brine-water system, on a tight budget. Lined valves tend to be really expensive, same with exotic metals, non-metal seemed to make the msot sense.
RE: "Large" Full-Bore Trunnion Ball Valves - PVC
Ok, I understand. Thanks for the information. Good Luck.