Valve Positioners and I/P Transducers for Power Generation and Energy Management
Boiler feedwater, steam letdown, fuel gas and burner air loops all sit on pneumatic actuators that need a positioner to hold stem position against changing process load. EAA builds the positioner and transducer patterns those valves already use, plus the limit switch boxes that report valve position back to the control room.
Talk To An EngineerWhat Goes Wrong on These Loops
- Steam and feedwater valves stick and jump because of packing friction and thermal growth
- Unbalanced force from process pressure pushes the plug off the demanded position
- Valve position is not reported back to the control room because the switch box has failed
- Energy management retrofits add loops faster than the spares stock is replenished
What Buyers Need From a Supplier
- Positioners that hold stem position against high differential pressure
- Limit switch boxes that give reliable open and closed indication
- I/P transducers to drive damper and louver actuators from an electrical signal
- One supplier for the positioner, switch box and pilot valve so the assembly arrives complete
Product Ranges for This Sector
Where These Units Get Fitted
- Boiler feedwater control valve that needs the loop closed at the valve rather than the control room
- Damper and louver actuators on combustion air driven from a 4 to 20 mA output
- Adding open and closed position feedback to a valve that only had a hand indicator
- Energy management retrofit where existing valves are re-signalled from a new controller
Delivery and Support
- Positioner, limit switch box and pilot valve supplied as one assembly on request
- Stock held on regular models and spare accessories
- 18 month warranty with replacement rather than repair
- Sales staff stay online during Chinese public holidays
From Enquiry To Delivered Units
Tell us the actuator type, stroke and signal range
We match the positioner pattern and switch box, and confirm whether a pilot valve is needed
Units can be supplied assembled so the valve shop fits one item, not three
Delivery 2 to 3 days on stock models, 7 to 10 days on project quantities
Models Commonly Specified Here
Related Reading
Units Built for Customers
Power Generation and Energy Management Questions
Can you supply the positioner already fitted to a limit switch box?
Yes. The YT1000R can be supplied assembled with a 210, 410A or 410B switch box, or with an internal or external position transmitter module.
Which model suits a damper or louver actuator?
Damper and louver actuators are normally driven from an I/P transducer such as the T1000 or T1500 rather than a positioner, because they take an air pressure signal instead of a position demand.
Do you supply pneumatic actuators as well?
Yes. Pneumatic valve actuators are part of the supporting range we supply alongside positioners, transducers, limit switches and pilot valves.
How fast can you ship?
Regular quantities normally ship in 2 to 3 days. Large quantities take 7 to 10 days.
Can you take an order during Chinese New Year?
Yes. Sales staff stay online during Spring Festival and other holidays to accept orders and answer enquiries.
Tell Us Which Model You Need
Send a photo of the unit you are replacing, or the model number you want quoted. We confirm the match, the price and the lead time before you commit to anything.