14 Reasons to Choose the Kinetrol AP Pneumatic Valve Positioner

AP postioner on Kinetrol actuator.

The AP pneumatic positioner combines smoothness and accuracy with convenience and simplicity of use. It provides unparalleled performance and real industrial robustness, easy calibration, and is well adapted to a whole range of valve and damper applications. AP options include high flow valves, direct mount or industry standard discrete mount housings, 4-20mA angle retransmit, limit switches, Clear Cone position indicator as well as I/P convertors. Below are 14 features that make the AP positioner a standout among all other valve positioners.

1. Enclosure and Lid – robust die-cast metal with tough corrosion-resistant epoxy coating and O-ring sealing. Layout gives easy access to all adjustments on removal of lid.
2. Spool Valve – highly reliable, all metal, 5 port proportional valve controls the air flow. Three versions, with different flowrates, are easily interchangeable.
3. Carrier Plate Assembly – integrated assemblies carrying the feedback shaft and cam plus angle retransmit drive and pot (when specified). Easily removed for conversion or maintenance.
4. Interchangable Port Plate – easily convertible for different flowrate options.
5. Feedback Pot Drive – zero backlash, proven trouble free for life.
6. Retransmit Pot – high quality conductive plastic servo–type with ball bearings. Proven long life and high precision.
7. Actuator Interface – options include NAMUR standard, Kinetrol male square or Kinetrol direct mount female square. Quick external conversion allows bracket mounting to any rotary or linear actuator.
8. Internal Angle Scale – with adjustable indicator for easy field calibration.
9. Exhaust Snubber Screws – allow travel speed reduction down to 1/ 3 x full speed, independently in each direction, by screwing in to restrict exhaust air flow.
10. Gauge Port – as standard.
11. Span and Zero Adjustment – quick and easy thumbwheel setting with slotted locking screw.
12. Feedback Cam – quick and easy reversal ( for rotational sense handing) or replacement (to change the response characteristic) of the cam is facilitated by a spring loaded retention device.
13. Feedback Shaft – innovative collet connection permits quick – fit/release of the actuator interface and eliminates backlash.
14. Airflow Changeover Block – allows selection of direction in which positioner moves (for direct mount models).

Kinetrol Product Catalog October 2017

Most recent version of Kinetrol catalog including Blueline coating for foodservice applications. Kinetrol rotary vane actuators are used to operate or position ball, butterfly and plug valves, ventilation dampers and automatic doors. Uses also include movement and positioning of components during manufacture - in fact anything that needs to be turned through 90° or less, automatically or by remote control.

You can download the Kinetrol Product Catalog from the Kinetrol USA site here.

Kinetrol Product Catalog October 2017 from Kinetrol USA

Kinetrol Actuators Performing Reliably Around the World

For over 50 years Kinetrol has been providing trouble-free valve and damper actuators to the chemical, biofuel, food & beverage, metal, mineral, oil, gas, pharmaceutical, power generation, paper, textile, water, wastewater, and transportation industries.

Visit Kinetrol USA at http://www.kinetrolusa.com or call 972-447-9443.

Check out the video below for a sampling of the harsh applications where Kinetrol vane actuators thrive.

9 Kinetrol Features Providing Unmatched Actuator Performance

1. Long life epoxy or PTFE internal finish
2. Easy stop adjustment at each end of stroke for accurate seating
3. Corrosion resistant zinc (non-incendive) or aluminium alloy case
4. Integral vane/shaft casting - only one moving part
5. Manual override square and position indicator
6. Stainless steel expanders ensure long term lipseal / case contact
7. Double opposed, Polyurethane, lip seals for effective sealing and long maintenance free life
8. Space filling/energy absorbent sideplates (polymer or metal)
9. Durable epoxy stove external enamel finish

Kinetrol USA - http://www.kinetrolusa.com | 972-447-9443

WEFTEC 2017

WEFTEC is recognized as the world’s largest annual water quality technical conference and exhibition, providing extensive educational opportunities and unparalleled access to the field’s most cutting-edge technologies and services.

WEFTEC's expansive show floor provides unparalleled access to the most cutting-edge technologies in the field; serves as a forum for domestic and international business opportunities; and promotes invaluable peer-to-peer networking among registrants.

The conference provides insights and products for water and wastewater technologies including:

• Collection Systems - Management, operations and maintenance, infrastructure, overflow reduction, wet weather planning, watershed approaches, and regulations
• Energy Conservation and Management - Resource recovery, combined heat and power, biogas optimization
• Membrane Technologies - Application in wastewater and water reuse, innovations, enhanced performance, regulatory compliance
• Plant Operations and Treatment - Innovations, technologies, processes, and proven solutions in water and wastewater treatment; including nutrient removal and odor control
• Regulations - CMOM/SSO Rules, TMDL/Watershed Rules, Nutrient Trading, and NPDES Phase II
• Research - Leading edge process applications in water and wastewater treatment and recent developments
• Residuals & Biosolids - Incineration, disposal, reuse through land application, research, regulations, politics, and public perception
• Stormwater - Treatment, green infrastructure, wet weather management, modeling
• Utility Management - Asset Management and financial planning for infrastructure, technology, regulatory compliance, and security; including environmental management systems (EMS)
• Water Reuse/Recycling - Research, regulations, emerging technologies, proven processes
• Water Quality & Watershed Management - Stormwater, wet weather, and watershed issues

Kinetrol is exhibiting again this year and will be in booth 4136. Please come by and visit us if you attend.

Exhibition Details:
McCormick Place | Chicago, IL
Exhibition: October 2 - 4, 2017
Hours: 8:30 am - 5:00 pm daily
COME VISIT US AT BOOTH 4136

This is a Great Chance to See the New Blueline Actuator for Food and Beverage Processing

Get a free pass to the PROCESS EXPO 2017 courtesy of Kinetrol USA!

September 19–22, 2017 • McCormick Place • Chicago, IL USA 

PROCESS EXPO is the nation’s largest trade show dedicated to bringing the latest technology and integrated solutions to all segments of the food and beverage industry.

Kinetrol is featuring the new Blueline Actuator series specifically for the food and beverage industry. Kinetrol Blueline Rotary Vane Actuators provide a superior alternative for actuating quarter-turn valves in food and beverage applications and are guaranteed for up to 4 million operations.

Stop by the Kinetrol booth #2670 and see the difference!

Instructions for your free pass: Visit this link and fill in your information. Or, go to the PROCESS EXPO 2017 site and use code 74768 when registering.

Control Valve Positioner and Control Valve Actuator Basics

Control Valve Loop*

Control valves control fluid in a pipe by varying the orifice size through which the fluid flows. Control valves contain three major components, the valve body, the positioner, and the valve actuator.

The valve body provides the fluid connections and movable restrictor comprised a valve stem and plug that is in contact with the fluid that varies the flow.

The valve actuator is the component that physically moves the restrictor to vary the fluid flow.

Their are two general categories of control valves - linear and rotary. Three actuator types are used in linear control valves including spring and diaphragm, solenoid, and motor operated. Three actuator types are used in rotary control valves including pneumatic, electric, and electro-hydraulic. Rotary actuators are sometimes referred to as "quarter-turn" or "partial-turn".

Pneumatic positioner with
rotary vane actuator
on ball valve.

The valve disc (restrictor) controls flow through the valve body. A positioner receives information from a supervisory controller advising wether or not the flow condition is satisfactory. The positioner then provides a signal to the actuator that provides the force to open and close the valve.

Each type of positioner works in response to a process signal. Some positioners (linear) use a 3-15 PSI pneumatic process signal. The pressure is exerted on a large diaphragm creating downward force that is applied against a spring which moves the restrictor up and own. Other types of positioners use a 3-15 PSI pneumatic signal to regulate a higher supply pressure (such as 0-60 PSI) to move pistons or vanes back and forth (rotary). 

The variable 3-15 PSI control signal can be provided directly by a pneumatic controller connected directly to the process, or in other cases the 3-15 PSI is regulated by an electropneumatic device called an I/P or E/P (current to pressure or voltage to pressure) transmitter. These transmitters receive their signal from a supervisory control as a 0-10VDC or 4-20mA and then throttle the 3-15 PSI output to open/close the valve. 

* Image courtesy of Tony R. Kuphaldt from "Lessons In Industrial Instrumentation"