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| WHAT IS AN ACTUATOR |
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A mechanism that causes a device
to be turned on or off, adjusted or moved. The motor
and mechanism that moves the head assembly on a disk
drive or an arm of a robot is called an actuator.
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Actuators are used for the
automation of industrial valves found in all kinds
of technical process plants including wastewater
treatment plants, power plants, refineries etc
wherein they play a major role in automation
process. The valves to be automated vary both in
design and dimensions. The diameters of the valves
range from a few inches to a few meters. Depending
on their type of source for operation, the actuators
may be classified as pneumatic, hydraulic and
electric actuators.
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| TYPES OF ACTUATORS |
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Quarter-turn actuators
Quarter-turn actuators are required for the automation
of quarter-turn valves. Major representatives of this
type are butterfly valves and ball valves. A
quarter-turn actuator is a device which transmits the
torque to the valve for quarter-turn (90 Deg.)
operation. Since these actuators are coupled with
quarter-turn gear box, they need not be capable of
withstanding thrust generated by the valve.
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BDK - B TORQ SECTIONAL VIEW |
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| APPLICATION |
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B Torq is a pneumatic quarter turn
actuator with rack and pinion design to actuate any
quarter turn valve such as: |
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Butterfly valves
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Ball valves
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Plug valves
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Media : Instrument Air / Nitrogen
Air pressure range : 2 bar to 10 bar |
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| DESIGN FEATURES |
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Reliability:-
we have conducted cyclic testing for over
100,000 cycles without any breakdowns.
Certification available upon request. |
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Compact and Designed
for high performance:- compared to
most other actuators B-Torq is extremely
compact, without compromising on its torque
features thereby making it easy to mount,
dismount and handle. |
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Low friction bearings
for long cycle life:- B-Torq
actuators under test conditions have proved to
be far longer lasting than its competitors
thereby giving you a quick Return on Investment
and longer equipment life. |
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Heavy duty Aluminum
hard anodized body for high corrosion
protection:- Warranty covers 18
months of corrosion protection even in the
harshest conditions. |
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Twin Rack Aluminum die
cast hard anodized Pistons:-
Providing superior functioning and greater life. |
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High precision Nickel
Alloy Steel Pinion:- Virtually
unbreakable ensuring a smooth maintenance free
operation. |
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Aluminum die cast end caps
powder coated:- Most manufacturers use non
painted end caps which may rust. |
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Namur mounting for direct
interface with solenoid valves:- For easy
operation and compatibility. |
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+ or –4 deg travel
adjustment:- Allows field adjustment for the
valve settings with ease without the need to
dismount the valves from the line. |
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Lesser numbers of O rings for
trouble free operation:- Lesser number of O
rings equals lesser number of parts to replace due
to wear and tear. |
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Wider spring combinations with
guide pin:- Gives the ability for greater
selection options, wider torque range and economical
solutions. |
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| FUNCTIONAL FEATURES |
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Quick and easy operation:-
B-Torq is quick to mount and extremely user friendly
to operate, no need for extensive manuals or
training is required to set up a B-Torq Actuator. |
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Lower Air consumption:-
B-Torq has proven to be the most economical actuator
in it’s class with the lowest air consumption
required to open and close the actuator, this in
turn gives the customers the fastest ROI possible. |
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Operates at very low air
pressures; as low as 2 bar:- As mentioned B-Torq
can operate at air pressures as low as 2 bar, most
other actuators need much higher air pressures for
the same class actuator. |
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Tested for 1 Million cycles:-
B-Torq has been tested for a million cycles
rigorously and has successfully surpassed this mark
without a single operational hitch thereby proving
its quality and durability |
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Higher torque
range:-
B-Torq has the widest range of models available for
selection, this large range allows customers to
choose the perfect model based on the service
conditions thereby eliminating the chances of an
oversized or an undersized actuator. |
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Variety of Models for
economical selection:- B-Torq is an extremely
competitive product and can help save customers over
30% in operational, maintenance and efficiency costs
over the nearest competitors. |
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Star drive connection for
multiple shaft adaptations and different degree of
mounting:- B-Torq is a versatile product that
gives customers a wide range of multiple shaft
adaptations and eliminates restrictions during
selection and installations. |
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| MATERIAL CONSTRUCTION |
| Body |
: Extruded hard anodized Aluminum |
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Pistons |
: Die cast hard anodized Aluminum
/ Steel |
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Pinion |
: Nickel Alloy Steel |
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caps |
: Die cast Aluminum powder coated |
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Springs |
: Spring Steel |
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Rings |
: NBR/Viton |
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Bearings |
: Low friction Delrin (Poly
Acetyl) |
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Screws |
: Stainless Steel |
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Please click on the links below, to know more about Types of Actuators |
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HOW TO SELECT AN ACTUATOR
Pneumatic actuator sizing is very important for the
pneumatic application. Pneumatic engineers need to look
at the push and pull forces being applied to the
pneumatic actuators. Rod size, sliding loading and
bending moments will lead to the actuator buckling.
Cushions should be considered for the maximum
deceleration when using actuators. Cushion capabilities
for pneumatic actuator designers, have many variables to
examine. One must always consider the compressibility of
the gas, weight, velocity friction pressure and of
course the load. If cushioning is not applied properly
the following major issues will occur: the piston could
impact the end cap, oscillating, movement in the
opposite direction and stopping in place are just a few
examples. Finally, if cushion issues of bouncing keep
occurring, one should consider making adjustments to
both the cushions and/ or loading when designing the
pneumatic circuit. Examples of possible solutions are
meter-out, or meter-in and external shock absorber being
used. |
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| HOW TO SELECT AN ACTUATOR - WORKING EXAMPLE |
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Examples, for pneumatic actuators
a 3.5-inches actuator is being used to give a force
output of 500-lbs.What is the pressure required?P-(pressure
Psi) = F-(force lbs) / area-(in2) Therefore;
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3.5 x 3.5 x.7854 = 9.62-in2,
500-lbs / 9.62-in2 = 51.97-Psior 52-Psi needed to
overcome the cylinder.
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What is the total volume of the
actuator if the cylinder with a bore of 3.5-inches
and a Stroke of 10-inches
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9.62-in2 x 10-inches stroke =
96.2-in3 of volume.
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| ACCESSORIES |
- Solenoid Valve
- Limit Switch
- Proximity Switch
- Pneumatic Positioner
- IP Converter
- Electro Pneumatic Positioner
- Smart Positioner
- Quick Exhaust Valve
- Air Lock Valve
- Air Filter Regulator
- Speed Control Valve
- SS / Copper / PVC / Nylon Tubing
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