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What Internal Best Practices Can Do for Valve Selection?
Datetime: 2016-06-14    Visit: 263

1. Select valves first. Use valves recommended and with references for long-time service for the fluid,temperature and flow you need.
2. Determine how long the closing,opening and response time for each valve can be, the longer the better for freer selection of actuators.
3. Listen in a moment to the never ending war between pneumatic actuator enthusiasts and electric actuator fanatics, to determine type of actuators. Consider also surroundings: climatic, indoors, outdoors, protection and other actuator systems (if any existing) in the factory. For a complete new factory I would have selected a top-grade electrical actuator with a system for online, bus-system communication of all data. Select multi-turn actuators and gearing (or possibility to mount in and extra 1:2 gearing if torque is higher than expected). Downsize actuators where possible by using longer closing/opening time and higher gearing ratio.
4. Select one source to supply valves with actuators ready mounted, adjusted and tested, with responsibility also for getting the total control system to work. Important that supplier has experience with the selected type of actuators and adjustment and mounting on valves!
5. See to that all relevant detailed technical information of the selected control system is presented and known for all project engineers already at pre-planning stage. Late decisions on control systems will often lead to compromises or costly alterations.

The rest is technical details best answered by local suppliers.

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