Fail-Safe Electric Actuators by Automated Valve & Control

September 6, 2013 – 11:09

Spring Return Electric Fail-Safe Option

Electrical Power Supply with Emergency shutdown at loss of power or signal

AVC is the industry leader when it comes to Fail-Safe Electric Actuators for Emergency Shutdown (ESD) and other Fail-Safe applications.

As the actuation industry is ever evolving, one solution is getting more attention then ever before, the Fail-Safe Electric Actuator.Battery Back-up Solution for Electric Actuators

One of the big advantages of Electric actuators over Pneumatics is the Ease and Flexibility of installation, Scalability plus Network & Communication controls and diagnostics.

When it comes to Fail-Safe Electric Actuators there are a couple of options, depending on Torque requirements:
Spring Return Actuators - Up to 2, 300 inch/lbs of Torque
Battery Back-up Units - Up to 2, 600 inch/lbs of Torque
Electro-Hydraulic Units - Up to 5, 300, 000 inch/lbs of Torque

Brands we represent and have access to with these capabilities:

RCS (Raymond Control Systems) a Dresser/GE company – The green RCS actuators have been around for a very long time and still serve their purpose. The US made product has a spring-return Fail-Safe Line under the name of SurePower. The spring-return unit goes up to 1, 800 inch/lbs of spring-end torque.

Remote Control (Rotork) -
AVC has been a long-time distributor for the Remote Control or "RCI" line. RCI offers a "Electro-Hydraulic" solution for application where electricity needs to be used, but Torque requirements exceed that of Spring-Return solutions. An electric pump pushes the hydraulics to operate a rack-and-pinion actuator with springs build in for fail-safe operation.Electro-Hydraulic Solution The solution is called: Self-contained Electro-Hydraulic. RCI's solution is simple and straight forward, without too many bells and whistles.

Rotork -
Same solution as RCI above. The Rotork "Skilmatic" series has a "bare" model as RCI does, however it can also be fitted with an "IQ" control head (see picture). This gives a lot more control and feedback options.
The Skilmatic series reaches up to 5, 300, 000 inch/lbs of Spring-end Torque making it suitable for the biggest of challenges.

Triac –
Has multiple Fail-safe operations solutions. Their spring-return unit goes up to 2, 300 inch/lbs.
The battery back-up goes up to 2, 600 inch/lbs.

Schischek -
Is a Rotork company which builds electric explosion proof products worldwide for heating, ventilating, air conditioning for industrial and offshore applications. A light weight easy to install Electric Actuator with a Spring-end Torque of over 500 inch/lbs.

Promotion Engineering -
The D and PA-PD Series provides 90 inch/lbs to 2, 300 inch/lbs of torque, both available with and without a manual override.

Back to Brands

Source: avctexas.com

Dorman Dorman 917-010 Variable Valve Timing Solenoid
Automotive Parts and Accessories (Dorman)
  • Actuates variable valve timing by controlling oil flow / pressure
  • Easily plugs into electrical harness
  • Aluminum
  • Resistant against wear and tear
  • Original Equipment (OE) Number: 12602516, 12615873
  • Direct fit replacement unit
  • Unit features Dorman engineered quality enhancements
  • Backed by Dorman s limited lifetime warranty

Brilliant

2009-10-24 19:56:39 by --



The aerodynamics are novel, combining vestigial cruciform wings with tail control surfaces of a lattice configuration (similar devices are used on the R-400 Oka). Each surface consists of a metal frame containing a blade-like grid assembly which combines a greater control area, and thus lifting force, with reduced weight and size. The development for this control concept took three years of theoretical work and testing. Referred to by the Russians as gas dynamic declination devices, these surfaces require less powerful actuators than conventional fins, and have a lower RCS

Fieldbus for steam-drain control  — InTech
Ultimately, when you minimize signals, you improve the overall efficiency and performance of the network.


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