Kinetrol Actuator on Asphalt Plug Valve

kinetrol actuator on asphalt valve
Kinetrol actuator on asphalt valve.
A Mid-west asphalt manufacturer purchased Kinetrol actuators for use at two of their plants as a trial for possible standardization. This asphalt producer owns 7 asphalt mix plants and has been plagued with failing rack and pinion actuators. They're used to open and close their liquid asphalt valves (Homestead plug valves).

The service is extremely nasty, as the asphalt is hot, sticky and gets everywhere. The Kinetrol actuators were installed on 3” Homestead liquid asphalt plug valves with extended brackets and couplings to prevent the actuators from seeing over-temperatures. The valves are cycled 10 times per day.

Since the summer of 2014 they have installed 5 Kinetrol actuators and all are working without problems. The initial results are so positive the customer plans to standardize on Kinetrol Vane Actuators, and replace the rack and pinion actuators as they fail.

Rotary Vane Actuator on Specialty Valves, Dome Valves, and Double Flap Valves Used for Abrasive Powders and Bulk Materials

actuators for bulk material handling
Actuators on specialty
purpose valves and gates.
Kinetrol actuators, positioners, indicators and limit switches are the preferred valve automation products when it comes to severe service applications.  One of the most challenging is bulk material handling.

Used to to accurately control the flow of bulk solids as they are being discharged from silos, bins and hoppers, Kinetrol products automate the specialized gate and mixer valves, dome valves, double flap valves, pot type diverter valves, and flow control gate valves.

These specialty valves all have one thing in common - the actuators are exposed to extremely dusty and dirty atmospheres, with significant amounts of vibration, and are located in areas where downtime is very costly.

Kinetrol vane actuators are used because of their ruggedness and their reliability. Positioners can be used to provide control via a 4-20ma input signals. Kinetrol pneumatic actuators have a much smaller footprint, smoother operation compared to more conventional linear pneumatic cylinders, and consume much less air. This results in significant savings in energy costs.

This video presents a variety of bulk material valve applications Kinetrol actuators have been used on.

Bi-directional Positioning of Large Dampers Using Rotary Actuators and Declutchable Manual Override Gearbox

declutchable manual override gearbox
Rotary Actuator with declutchable
manual override gearbox
Rotary actuators are used in a great variety of applications. There are many designs of rotary actuator, including examples actuated by hydraulic pressure, pneumatic pressure and electric drives. It is also known to use position controllers to modulate the position of the actuator. All of these various designs have in common the purpose of providing an output torque which can be utilized to drive another device or mechanism.

One common application for bi-directional rotary actuators is the positioning of large damper valves controlling the flow of air and other gases along ducting in power generating plants. These dampers are often inaccessible, so it is not possible to install drives immediately adjacent the valve. In such circumstances, the rotary actuator drives the damper valve via a mechanical linkage. The rotary actuator will, in most cases, be used in conjunction with a position controller to provide for accurate control of the position of the damper valve.

In this, and other applications of rotary actuators, it can sometimes be desirable to provide for manual adjustment of the position of the actuator, for example during the initial set-up of a mechanism, or on failure of automatic actuator function. This is generally accomplished by using a so called declutchable manual override gearbox. The gearbox is mounted adjacent to the actuator and is connected to the output of the actuator. Drive is transferred via the gearbox to a drive shaft connected to the gearbox output. The gearbox includes a manually operable override, typically a wheel or lever, selectively engageable with the drive train in the gearbox. In normal operation, this manual override is de-clutched from the drive train. However, if it is desired to manually adjust the position of the actuator and the mechanism it drives, the manual override can be engaged.

A Cheesy Application for a Kinetrol Actuator & Positioner

Kinetrol Actuator on Steam Line
Kinetrol Actuator, Positioner and Spring on
Steam Line in Cheese Making Plant
High above the cheese factory floor, mounted to a 1-1/2 steam supply pipe is a lonely V-ported ball valve with a Kinetrol 097-120 actuator, spring  unit, and positioner. The valve is controlling 180 PSIG steam at 375 Deg. F. with the ambient air surrounding the actuator, positioner and spring unit at a constant 135 deg. F.

Its a tough application, and critical to keep running. Losing steam supply is very costly because of production losses and access to the valve is difficult.

The plant maintenance people tried a few of the more well-known valve/actuator packages without success. These packages would last a few weeks (a couple months at best), before failing. Frustrated and out of answers, the maintenance crew turned to a local Kinetrol Distributor salesperson for advice.

Knowing Kinetrol actuators, spring units and positioners are designed for the toughest applications, the salesperson specified the 097-120 on top of a Triad v-ported ball valve. Hopeful, but with little optimism, the maintenance crew installed the 1-1/2 control valve on the steam line and fired the system up.

For 11 months now (without any downtime), 24 hours a day, this lonely control valve, powered by a Kinetrol positioner and vane actuator, accurately throttles the steam supply and reliably keeps the cheese process line running.

Problem solved by Kinetrol!

The Kinetrol Universal Limit Switch

The Kinetrol universal limit switch box offers a wide range of signa ling options in a zinc alloy fully enclosed corrosion resistant case available for direct mounting onto Kinetrol rotary actuators,
or discrete mounting via an industry standard VDI/VDE interface onto any make of rotary actuator. Easy to wire and set up with real industrial-quality robustness. - Internally fitted options include AS interface digital communication and a 4-20 mA 2-wire modulating angle retransmit circuit.

Kinetrol Solves the Toughest Pneumatic Actuator Challenges

Kinetrol pneumatic vane actuators are world-renowned for their high cycle rate, durability, sealed spring unit, and precise control.

Kinetrol provides a rugged, corrosion-resistant pneumatic vane actuator with only a single moving part.

This simple and innovative design provides a highly accurate and extremely reliable actuator for operating valves, drives and dampers, and is perfectly suited for the most demanding process control control applications.

The Kinetrol vane actuator is warranted to operate trouble-free for 4,000,000 (million) cycles.



For more information, contact:

KinetrolUSA
1085 Ohio Drive
Plano, Texas 75093
(972) 447-9443 phone
(972) 447-9720 fax
sales@kinetrolusa.com

An Extremely Accurate and Precise Valve Positioner

The EL electropneumatic positioner combines the precision and adaptability of a digital electronic control circuit with the smoothness and efficiency of Kinetrol's proven proportional servo valve, to give the best available 4-20mA positioning performance from rotary pneumatic actuators. 

This unbeatable performance is combined with the easiest available setup procedure, easiest access to all functions and options, easy connectibility, and a truly compact all-metal enclosure, plus unique easy-set isolated angle retransmit and limit switch options inside the same enclosure.

Features
  • Fast, smooth and precise control from a digital circuit and proportional servo valve 
  • Simple time saving field set up
  • Quick calibration via push buttons and LED feedback and easy reversal of rotation sense (clockwise/counter clockwise) without special tools or parts change. 
  • Universal application
  • The unit can be mounted in any orientation on to any quarter turn or linear application by connection via a NAMUR or Kinetrol square interface. 
  • Loop powered
  • No separate power needed, just a 4-20mA signal plus air supply. 
  • Integral options - easily retrofitted modules include:
    • Two wire 4-20mA isolated angle retransmit 
    • Mechanical or inductive position indicator switches (general or hazardous areas) 
    • Clear Cone high visibility indicator 
    • Threaded conduit entries or DIN plugs for external connection.
  • Intrinsically safe approved options 
  • Weatherproof, compact and robust metal housing 
  • Zero backlash coupling with easily adjustable switch strikers 
  • Vibration and shock resistant to 4G 
  • Built in gauge ports/external connections