For an offshore job I may need to use volume boosters on a large modulating control valve positioner output.
I'd appreciate it if someone can suggest a supplier of 316sst body volume boosters.
Customer specification calls for 12" separation for power and instrument signal cables running on cable tray.
Our designer did not consider 24VDC solenoid/switch power as a "power" cable (typically power assumed to be 220VAC for lighting etc) so we have analog and digital cable in same tray with...
We are running 24V Analog cable in the same GRP cable tray as 24VDC solenoid cable, separated by a GRP barrier.
Is there an issue with EMF through the barrier considering both are DC cables? (I assume when the solenoid is energized/de-energized) Should the barrier be 316 sst or similar?
The...
I searched keyword and FAQ but couldn't locate what I was looking for.
1.Is the Thermowell vibration calculation to Power Test Code ASME VOL 81 by J.W. Murdock or similar available on the web?
2. As I understand it, the calculation is based on a screwed thermowell, in a weldolet style fitting...
Yarway (Tyco) and others make an automatic recirculation valve (ARC) for automatic pump spillback when the flow falls to the pump minimum required spillback rate.
I am reluctant to specify this type of spillback because I have had no experience with it. Some of our systems require long term...
