Looking for or have a question about a Compact Spring Return Actuator? Prochem has the answers - Contact them here.
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Looking for or have a question about a Compact Spring Return Actuator? Prochem has the answers - Contact them here. |
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ACT Actuators accommodate a specific market need for a compact spring return actuator to operate quarter turn and linear operated valves. Applications that particularly benefit from their compact design are those where installation space is limited, like on topsides, high-pressure manifolds, internal / external turret areas and (vertical mounted) riser valves. A compact actuator design could also benefit the handling, mounting and alignment in case large valve sizes/high pressure ratings do apply. Due to the enhanced actuator design, ATC actuators are also installed in shallow to ultra deepwater, and available complete with ROV interfacing and receptacles to ISO. ATC actuators are SIL 3 compliant to IEC 61508 and are manufactured in compliance with the ISO 9001 2000 quality procedures.
Compact Actuator Solutions and Systems - Some comprehensive Compact Actuator Design Information and Application details from Prochem.
Compactness - Design flexibility, combined with the innovative integration of all actuator parts, results in the most compact actuator available in the market. In virtually all applications, irrespective of hydraulic or pneumatic supply, the ATC actuator diameter is smaller than the Face-to-Face dimension of the valve.
Flexibility - The ATC actuator enables designers to minimize overall dimensions, reduce platform weight & deck load and ease the design of steel support structures.
Reliability - A complete Failure Modes Effects and Criticality Assessment (FMECA) has been carried out, including verification of the complete installed base. As a result, TUV Rheinland has certified the ATC actuators to SIL 3, following the IEC 61508, based on a 1oo1 architecture applied. The ATC actuator has been tested extensively in accordance with the Shell type approval test procedure (DEP 31.40.70.30) and the API 6A PR2 procedure. These tests included extensive functional and seal testing, a compressed spring test and a dynamic load cycle test at 95% of the maximum torque for a total of 6200 cycles at temperatures ranging from ń20 ?C to 65 ?C. The successful completion of these tests has been certified by an independent body.
Subsea Actuator Technical Features - ATC has a complete line of sub-sea actuators available suitable for shallow water applications and installation in ultra deep waters, including ROV interfacing.
Applications - Submerged production, Submerged (off) loading, Sub Surface Isolation Valve (SSIV), PLEMS , Subsea Manifolds, Production Valves, Pipeline Valves, and Pigging Valves.
Applications - Topsides / Manifolds, FPSO Turrets, Loading Buoys, Riser Valves, Isolation Valves, and Ballast Valves
Actuator for Safety Related Systems - The ATC spring return actuator offers an enhanced reliability, while having a minimum quantity of actuator parts. A complete FMECA has been carried out in conjunction with a complete review of our installed base. The actuator is certified by TUV Rheinland to meet SIL 3, following the IEC 61508 and based on a 1oo1 architecture applied.
Applications - Overpressure Protection Systems, HIPPS, and ESDV
Spring Return Hydraulic Actuator Technical Features - The standard ATC spring return actuator is the most compact actuator available in the market. In short, the ATC actuator offers the following advantages
Spring Return Pneumatic Actuators Technical Features - Due to the innovative design, The ATC pneumatic spring return actuator is available in dimensions which are close to the hydraulic version and therefore uniquely compact.
Compact Double Block & Bleed (DBB) Valve Actuator Technical Features - The ultra compact ATC actuator allows for “redundant actuation” within one valve body (DBB) rather than using 2 individually installed valves. This optimisation results in a considerable reduction in pipe length, flanges, adapter sets and having the most impact in case exotic pipe materials are applied.
Double Acting Actuator Technical Features - The ATC double acting actuator is based on the same unique design approach and flexibility as applies to the spring return range.
Valve Actuator - Actuators are used for the automation of industrial valves and can be found in all kinds of technical process plants: they are used in waste water treatment plants, power plants and even refineries. This is where they play a major part in automating process control. The valves to be automated vary both in design and dimension. The diameters of the valves range from a few inches to a few meters. Depending on their type of supply, the actuators may be classified as pneumatic, hydraulic, or electric actuators - This link from Wikipedia gives lots of technical information.
Scotch Yoke - The Scotch Yoke principle is characteristic for its high torque when required - at the beginning and end of each operation. This increases safety, especially in applications where the valve remains stationary throughout long periods. From our sponsor Austral Powerflo Solutions and Remote Control.
Firesafe Actuators - From our sponsor Samson Controls
Hydraulic Actuator Design and Operation - Pneumatic actuators are normally used to control processes requiring quick and accurate response, as they do not require a large amount of motive force. However when a large amount of force is required to operate a valve hydraulic actuators are normally used - from Engineers Edge
White papers required for this subject.
The Fisher Control Valve Handbook- This superb 295-page PDF whitepaper is a control valve resource that has been consistently updated for 30 years. It contains vital information on control valve performance and latest technologies. Thanks to our sponsor Emerson Process Management
Understanding Control Valve Bench Set - Dave Harrold-from Control Engineering
Actuator and Control Valve Selection - Professor Dae Ryook Yang - Dept. of Chemical and Biological Engineering Korea University
Control Valve Actuators and Positioners - Control valves need actuators to operate. This tutorial briefly discusses the differences between electric and pneumatic actuators, the relationship between direct acting and reverse acting terminology, and how this affects a valve's controlling influence. The importance of positioners is discussed with regard to what they do and why they are required for many applications-from Spirax Sarco
Control Valve Actuator Options - Today’s Actuators Offer Imposed Performance With Lower Life-Cycle Costs. The Challenge Is Choosing the Right One for the Application - George Ritz - Over the past several years, valve actuators have received relatively little attention while process control specialists concentrated on controllers, sensors, and other components of the control loop. This is borne out by the unglamorous nickname “pig iron” assigned to the actuator/control valve unit. With the onset of the smart-valve generation, it suddenly appears that the control valve actuator may get more respect along with its new electronics degree - from CCI
The following links are provided thanks to ICEweb Sponsor Austral Powerflo Solutions
Rotary Limit Switch Boxes - Rotary limit switch boxes provide a visual and remote electrical indication of quarter turn valve/actuator position (ball, butterfly and plug).
Bolt Switches - "Bolt" switches are magnetic proximity switch suitable for any type of position indication.
Valve Position Indicators - The 3D Series namur indicators provide high visibility verification of valve/actuator position. The indicator features a rotor with red and green quadrants that rotate to indicate valve open and valve closed positions.
Manual
Override - Declutchable gear overrides are used for manually operate valve
complete of double acting or spring return actuators.
Spring
Return Cartridges - Spring return cartridges are used on manually operated
valves to ensure that a fail safe position is achieved. The lever or hand wheel
is used to manually operate the valve and when the operator releases the lever
or hand wheel the spring return cartridge will automatically stroke the valve to
the failsafe position.