The option of a timed stroke operation from an electric might be a good solution, but the electric actuator could be expensive.
You might need a control valve, but a globe valve could have a smaller Cv than a ball, and also a higher DP.
Have you considered an eccentric plug valve with a...
Perhaps at that time, the use of three valves (Two independent elements and a bleed) was the only possible option. And since the design has proven to meet their demand it has been standardized and continues to be applied.
Here are some comments on using a single DB&B valve:
- The use of three...
Jim, thank you for the observation.
The valve available is 3/4" API/ASME Class 800 and also meets the ASME B16.34.
ABScott, we also agree with you and find this unusual. This is also why we posted the question. We want to know if this is a typo or not.
The valve specified (3/4" ASME CL600)...
Thank you all for your comments...
To rephrase my question:
The valve specified is 3/4" Gate 600# with BW ends
The valve available is 3/4" Gate 800# with SW ends.
We have been considering the option suggested by Oldliar, to grind down the end. Our concern now is if the schedule of the valve...
Does your application require a fail safe action? Can the roller screw electric actuator provide it?
It does look very interesting. Thank you for sharing this with us.
We have found a 3/4" gate valve 600#, but some engineers suggest that this rating only applies for socket weld. We have also been told that this is out of standard.
Is this true?
Thanks for the input.
Hi,
I'm looking for a ball valve that can withstand high operation cycles without leaking through the stem packing. I’ve only seen these types of valves for ANSI 600, any suggestions?
Description:
Isolation On-Off Ball Valve
Service: Gas
Ansi 1500 WCB Flange 4" (4x3) RJ (R39)
Temp: 100-120 ºF...