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Frequently Asked Questions About the UniPro Valve Closure Systems
Question:
My process automatically shuts down in the event of a leak. Why do I need the UniPro™ Valve Closure System?
Answer:
 Most loading and unloading operations include automated process valves that are installed in the process lines leading to and coming from the tank car or tank truck. These valves are closed automatically in the event of an emergency. However, the length of hose or stub pipe connecting the tank car or tank truck to these process valves could rupture. If it did, the process system would shut down, but the tank car or tank truck valves would not, allowing the leak to continue until the actual valves on the tank car or tank truck could be closed. The UniPro™ system integrates with the existing process shut-down system to close the container valves at the same time that the process valves are closed, preventing continued flow out of the tank car or tank truck.
Do you have a reliable valve closure system?
Automated Shut Off Valves on Flexible Transfer Hoses:
Why Mount An Emergency Valve Closure Actuator On A Tank Car Valve?
UniPro FAQ
Q. Who should consider using a UniPro™ Valve Closure System?
Q. My process automatically shuts down in the event of a leak. Why do I need the UniPro™ Valve Closure System?
Q. How does the system work?
Q. What components do I need for my UniPro™ Valve Closure System?
Q. How does the UniPro™ system accommodate tank car valves with different torque requirements?
Q. Why the UniPro LT? Can’t I just turn down the pressure to operate the soft seat/low torque angle plug valves with the Standard UniPro™?
Q. What if I only get tank cars or tank trucks with soft seat angle plug valves?
Q. How much torque do the UniPro™ actuators deliver?
Q. The containers I service have quarter turn angle ball valves on them. How do I close them with the UniPro™ Valve Closure System?
Q. What do I need on my platform to be able to use the UniPro™ Valve Closure System?
Q. My plant compressed air supply only achieves 70 psig. Is this enough to operate the UniPro™ system?
Q. What if my plant air system or electric service fails? Will the UniPro™ system still close the valves?
Q. I want the UniPro™ Control Panel to integrate with my other system controls. Is this possible?
Q. I have professional technicians that are capable of assembling our own air control system and panels. Can I still use UniPro™ actuators?
Q. I service a combustible gas. Is there any danger of the UniPro™ system making a spark during operation?
Q. My control room is quite a distance from the platform. Would I be able to activate the UniPro™ system from there?
Q. How long does it take to mount the UniPro™ actuator on the valves?
Q. How long does it take to close the valves once the UniPro™ actuator has been activated?
Q. Is there anything special I need to do with the valves when mounting the UniPro™ actuator on them?
Q. I have to operate high torque ACF valves in a very hot environment on tank cars carrying a very toxic chemical. Safety protocol demands that my operators wear full HAZMAT equipment while operating the valves. The process of opening these valves while dressed in a hot suit has been responsible for heat exhaustion on occasion. Can the UniPro™ system help my operators?
Q. Can I use the Torque Limiting Valve Adapter on the UniPro™ R to open and close soft seat/low torque valves?
Q. If the UniPro™ R with the Torque Limiting Valve Adapter won’t open the soft seat/low torque valves, must I remove it from the dome every time I need to open them?
Q. Why does the UniPro™ R actuator require two air hoses?
Q. What if an emergency closure is necessary while my operator is using the UniPro™ R to manipulate a valve on a tank car?
Q: My UniPro™ Operating Manual says not to turn down the operating pressure to close tank car valves with soft seats. That’s how competitive actuators do it. Why not the UniPro™?
Q: I’ve seen tank car valve closures that mount directly to the valve body. Why does the UniPro™ Standard Pneumatic Actuator mount to the tank car dome wall?
Q: Why is the UniPro™ Control Panel bigger than the panel for the other system used on tank car valves?
Q: The company that owns the tank cars that we service changed all the angle plug valves in the tank car domes. Will the UniPro™ system fit the new valves?
Richard Fortino, BSME, is Powell’s Lead
Valve Closure Development Engineer.
Richard is available to assist you with
your technical questions by email
at rfortino@powellfab.com or by calling
989.681.2158.
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