Vadodara, Gujarat, India
Our Products
Rotex EHF Series Actuators are self contained; electro-hydraulic actuators are particularly well suited for applications requiring critical control and high reliability.
The EHF series has a wide range of applications and is resistant to environmental influence, even in marine environments. The electro- hydraulic actuators are recommended within district heating plants, oil and gas depots where Explosion-proof equipment is required and where pressurized air is not available or unsuitable. Within the oil and power industry, safety is of the highest importance. In emergency situations the failsafe function i.e. close or open the valve automatically with the aid of a return spring in the actuator.
Advantages:Reduced installation and maintenance costsMost reliable means of positioning a valve in a safe position on loss of power or signalThe actuator is constructed for direct mounting on valves according to ISO-standards.Designed for safety critical applicationsConfirms valve availability and minimises plant shutdownImproved process control and product qualityProvides local operator informationComplete sealing allows calibration and interrogation of the actuator in all environmentsEnvironmental protection maintained for internal components during installation and commissioningInterfaces with a variety of communication networksSuitable for harsh environments including immersion up to 7m
Rotex is leading manufacturer of Valve automation system with almost all sizes of ball valves,
butterfly valves and plug valves for the applications, Valve Automation for Emegency Shutdown / Blow Down applications
Valve Automation for ON-OFF Applications
Valve Automation for Control Applications
Valve Automation for BUS Communications Applications
Valve Automation for Modulating Applications
Valve Automation for customised / Specialised Applications
Remote Operated Shut off Valve (ROSoV)
Gas Over Oil Actuators for High Pressure Gas Lines
There are more than 50000 valve automation systems running in the field.
Huge installations are put up in Oil & Gas, Pharma, Power, Cement and other process industries
We offer High performance Heavy Duty Scotch yoke actuator DRS series with Torque limit up to 830 Nm to 600000 Nm. & Heavy Duty, High Performance, Rack and Pinion Construction series DRC delivering torques from 200 Nm to 20720 Nm.
Life more than 1 million cycles.,
SIL3 capable
End Stroke : +/- 10 Degree
Easy to convert from Double acting to Single acting.
Engineering plastic, with High impact strength excellent corrosion resistance
Shatterproof Polycarbonate Dome Easily settable colour coded cam
The locked serrated cams, ensures the secured settings against any vibration
A special PCB, eliminates all the wiring from the switch element to the terminals. Complete protection against short circuit.
Three cable entries are provided as a standard
Cable entries M20X1.5, 1/2 NPT
Complies to NAMUR Mounting standards
Solenoid termination provided inside the switch box
Additional mounting holes are threaded as per the UNC series
Range of Mounting Accessories having the compatibility with the various Actuator manufacturers available A Stainless Steel bracket is available as an option
Temperature range -20 C to +80 C On request -40 C to +120 C, -60 C to +80 C
IP67 : Water, Rain and Dust Proof
IP68 : Upto 100m on request
The two pack epoxy coating is done on a Hard Anodized surface
of the Aluminium body by the spray technique. It produces a 100mu
thick layer (only external surfaces). This epoxy coating helps in
protecting the actuator from extremely corrosive environments.
Choose this option specially for alkaline environments. It is also
suitable for environments like Ammonia, Ammonia Liquor etc. ROTEX
Aluminium Diecast, Housing and cover with powder coating, for superior corrosion resistance
Shatterproof Polycarbonate Dome
Easily settable colour coded cam
The locked serrated cams, ensures the secured settings against any vibration
A special PCB, eliminates all the wiring from the switch element to the terminals. Complete protection against short circuit.
Three cable entries are provided as a standard
Cable entries M20X1.5, 1/2 NPT
Complies to NAMUR Mounting standards
Solenoid termination provided inside the switch box
Additional mounting holes are threaded as per the UNC series
Range of Mounting Accessories having the compatibility with the various Actuator manufacturers available
A Stainless Steel bracket is available as an option
The switch box conforms to the UL508, UL file no. E249752
Temperature range -20 C to +80 C On request -40 C to +120 C, -60 C to +80 C
IP67 : Water, Rain and Dust Proof
IP68 : Upto 100m on request
Life of the Solenoid depends on ambient temperature, duty cycle, temperature rise and class of insulation used for the solenoid. Temperature rise depends on design, current density and insulation system of the coil. Rotex ensures that for all its design of the coil, temperature rise above ambient is less than 70 C
As per IS 4800 standard, insulation system is designed for minimum life of for 20000 Hours When used continuously. Using the half life decay principle, every 10 C reduction of the coil temperature, twice the life can be extra polated. Considering worst temperature rise of the coil at 1.2 times the rated voltage, continuously energized coil shall be less than 70 C. For a ambient temperature of 55 C, the maximum temperature of the coil will be 55 + 70 = 125 C
For a Solenoid having class F insulation minimum life expected shall be as under:
20000 Hours at 155 C
40000 Hours at 145 C
80000 Hours at 135 C
160000 Hours at 125 C
Which means, Life of a Continuously energized Solenoid having Class F Insulation, i.e. (ambient of 55 C) is Minimum of 160000 Hrs ie 18 Yrs.
In case if more life is expected then Solenoid with better insulation or lower temperature rise is to be used (e.g. Low Power Solenoid)
Aluminium Diecast, with powder coating for superior corrosion resistance
Shatterproof polycarbonate Dome
Easily settable colour coded cam
P&F cylindrical inductive proximity Sensors (EEx ia)
The proximity switches are available in NAMUR and NO/ NC type
Customer can choose proximity switch from wide choice
Three cable entries provided are standard Cable entries M20X1.5, 1/2 NPT
Complies to NAMUR Mounting standards
Additional mounting Accessories have compatibility with various Actuator manufacturers available
Stainless Steel bracket available as an option
Switch box conforms to UL508, UL file no. E249752
Temperature range -20 C to +80 C On request -40 C to +120 C, -60 C to +80 C
IP67 : Water, Rain and Dust Proof
IP68 : Upto 100m on request
Special proximity switch can be installed on request
Intrinsically safe
Weather Proof enclosure, IP67
P&F flat type inductive proximity Sensors (EEx ia)
Up to Maximum 2 Sensor Elements
Aluminium Diecast, with powder coating, for superior corrosion resistance
Shatterproof polycarbonate Dome Easily settable colour coded cam
The locked serrated settings cams, ensures the secured setting against any vibration
Special PCB eliminates all wiring from the switch element to the terminals. Complete protection against short circuit.
Three cable entries provided as a standard Cable entries M20 X 1.5, 1/2 NPT
Complies to NAMUR Mounting standards
Solenoid termination inside the switch box is possible
Proximity switches are available in NAMUR and NO/ NC type
The customer can choose any flat V3 proximity switch
Additional mounting hole is threaded as per the UNC series
Range of Mounting Accessories having compatibility with various Actuator manufactures available
Stainless Steel bracket available as an option
Switch box conforms to UL508, UL file no. E249752
Temperature range -20 C to +80 C On request -40 C to +120 C, -60 C to +80 C
IP67 : Water, Rain and Dust Proof
IP68 : Upto 100m on request
Weather Proof enclosure, IP67
P&F slot type inductive proximity Sensors (EEx ia)
Up to Maximum 2 Sensor Elements
Aluminium Diecast, with powder coating, for superior corrosion resistance
Shatterproof Polycarbonate Dome
Easily settable colour coded cam
The locked serrated cams, ensures the secured settings against any vibration
Special PCB eliminates all wiring from the switch element to the terminals. Complete protection against short circuit.
Three cable entries provided as a standard
Cable entries M20 X 1.5, 1/2 NPT
Proximity switches available in NAMUR
Complies to NAMUR Mounting standards
Solenoid termination inside the switch box is possible
Additional mounting holes are threaded as per the UNC series
Range of Mounting Accessories having compatibility with various Actuator manufacturers available
Stainless Steel bracket available as an option
Switch box conforms to UL508, UL file no. E249752
Temperature range -20 C to +80 C On request -40 C to +120 C, -60 C to +80 C
IP67 : Water, Rain and Dust Proof
IP68 : Upto 100m on request
Weather Proof
Explosion Proof
Explosion proof and weather proof position transmitter
Accuracy 0.3% FS
Repeatability 0.2% FS
Hysteresis 0.3% FS
Field adjustment availa
Double rack and pinion construction.
CF8M material for high corrosion resistance.
The pinion and piston are supported on polyacetal bearings
Maximum working pressure 8 bar
Additional lubrication is not required
Temperature range :
Super Seal optionally avaliable with ECF Series
Polyethylene seals for an extremely long life.
Low friction , areas retaining grooves provides non stick slip movement.
Life over 3 million cycles.
The groove design is common for NBR & PE seals.
The alternative seals can be installed at later date
Rack & Pinion construction delivering torques upto 5000 Nm in a compact size
The Actuator is suitable for coarse fine adjustment, typically for batching operations
or processes
The Actuator has to be spring return
The operation sequences fixed from full open, partial open to full close
Infinite intermediate positions are possible with the limit switch
Backlash free operation between rack and pinion makes ROTEX Actuator suitable for
regulation duty coupled along with positioner (pneumatic or Electro-Pneumatic)
Long life of the Actuator seals, the non wearing characteristic
of the mechanical parts ensure that the control action is maintained,
over the life time of the Actuator
It can be coupled along with the various types of valves
(Ball, V Port Ball or Plug, Segment Ball, Butterfly, Plug) or louvers and dampers
for variety of applications
Typical control schemes along with the regulating Actuator
includes provisions for:
1. Air failure safety includes stay-put or fail safe operation, like full close or full open
2. Power failure safety, including stay-put or fail safe operation, like full close or full open
3. Both air & power failure safety, including above
The Single Acting 180 Actuator can provide centre off for the 3 way ball valve,
bottom entry by choosing theoption, of 3 position
It can be converted to 3 position 0 90 180 Actuator for 3 way valves using
ROTEX Limit Switch and NAMUR valve type 30138
The end stop adjustment is provided for opening and closing direction as a standard
Actuator mounting is as per ISO 5211 and accessories to NAMUR
180 Actuator has 50% of torque value, of that of 90Actuator
ROTEX actuators are available with variety of Manual overrides
designed to deliver full rated torque output. The SWH provide an easy,
efficient and durable method for manually operating the actuator.
The arrangement is available from bore size 63-700.
