Electric Valve Actuators
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Valves are used to regulate and control the flow of a liquid in a system. While some valves are manually controlled, such as the one that turns your kitchen tap on and off, other larger industrial valves are controlled by an actuator. An Actuator is a machine that is used to automate the control of industrial valves, and they are used in such industrial settings as wastewater treatment plants, power plants, and refineries.
Actuators can be used to automatically control valves, such as the different programmed cycles on your washing machine, or can be set to remote control the operations of a centralized control room. Often, the valve is so large that manual control becomes impossible, and an automatic valve actuator is needed.
There are three different types of valve actuators: pneumatic, hydraulic and electric valve actuators.
Pneumatic Valve Actuators
A pneumatic actuator works by converting energy in the form of compressed air into motion which controls the valve. One of the advantages of this type of actuator is that they are usually a simple design and therefore relatively cost effective. However, a supply of compressed air is required for their use.
Hydraulic Valve Actuators
This type is similar to Pneumatic actuators, yet water or another fluid such as oil is used instead of air. Hydraulics is a very old source of power, and it has been used since the 6th millennium BC. However, Hydraulic actuators need a supply of liquid lines to function.
Electric Valve Actuators
Electric valve actuators are powered by an electric motor, and are able to handle larger valves than the other two because their power has no limits. Many large scale gate valves with high torque requirements are exclusively operated by electric valve actuators.
Of course, electric valve actuators have the disadvantage that they cease to function in a power failure. However, most electric valve actuators will have a hand wheel built in so that they can be operated manually in such a situation.
Electric valve actuators also have the advantage of being able to be programmed with computer technology to perform automated functions and processes. Electric valve actuators are able to monitor outside factors and adjust their behaviour according to controller parameters.
Electric actuators are able to be used in any climate condition around the world, and they are particularly important in situations where potentially explosive materials are being handled such as oil and gas. Their flameproof enclosure prevents ignition sparks from leaving the device.
Industrial sized or incredibly tiny, electric valve actuators are the most versatile and practical type of valve actuator available today.
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Threaded & Socket Weld Valves
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Threaded & Socket Weld Valves
Introduction to the Female Threaded Three-Piece Ball Valve
Female threaded three-piece ball valve refers to the valve with the three-piece body and female threaded design. Similarly, it takes well at controlling the flow though the spherical disc. This kind of valve can be used for the control of water, oil, steam, nitric, acid, acetate acid and some corrosive liquids in a variety of industries, such as the pharmacy, dairy, food, beverage, beer, wine, biology and other high-accuracy fluid equipments. Actually, this kind of valve has been playing an important role at improving the industrial development.
At first, female threaded three-piece ball valve has adopted the design for three-piece body. Actually, three-piece body ball valves are generally manufactured for considering about the convenient assembly and disassembly. The bodied are connected by the flanged connection so as that the valve itself is able to be operated under rather high working temperature and pressure. So the same with the wide applications. And the valve ball, valve stem and valve handle are also provided as well between them. Frankly speaking, this elaborate design makes the periodic maintenance of the valve seals and other internal components conveniently. Then, the female thread for the female threaded three-piece ball valve does favors on the reliable sealing performance. It is suitable to be installed easily in the pipelines. Pneumatic or electric actuators are available to drive this kind of valve.
No matter what, it does great help during the whole industrial process. And many materials such as the CF8, CF8M, CF3, CF3M or WCB are applicable to the manufacture of the female Threaded Three-Piece Ball Valve.
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Belgium 12th International Pump, Valve & Equipment Exhibition – Pumps, Valves, Show – Pump
Start time: 2008-10-15 End time: 2008-10-17 Venue: Belgium Contact: Jiang Wei Contact Phone: 85,592,930 Sponsored by: Antwerp, Belgium Exhibition Sponsor: Beijing CIEC International Exhibition Co., Ltd. Global
Show specific information: Exhibition: The 12th Belgian International Pump, Valve and Equipment Exhibition
Show time: 15-17 October 2008 Venue: Exhibition Centre, Antwerp, Belgium Exhibition period: two years term Exhibits: Pump: water pumps, chemical pumps, pneumatic diaphragm pumps, metering pumps, screw pumps, centrifugal pumps, magnetic pumps, sewage pumps, oil pumps, vacuum pumps, pressure pumps, mud pumps, acid pumps, accessories and systems, seals and sealing technology;
Valves: butterfly valve, ball valve, gate valve, vacuum valves, steam traps, power station valve, solenoid valve, control valve, temperature control valve, stop valve, exhaust valve, seal valve, drain valve, reduce temperature by pressure valves, intelligent control valve, micro flow control valves, nuclear valves with control, temperature control valve; electric actuator, pneumatic actuator, hydraulic actuator, manually executing agency, locator, solenoid valves, valve position transmitter , valve position switches, security position valves, intelligent modules;
Valve components and systems, seals and sealing technology;
Pipe: all kinds of seamless pipe, stainless steel pipe, alloy tube, precision tube, non-ferrous metal pipe, structural pipe, plastic pipe, composite pipe, etc.; all kinds of pipes, pipe manufacturing and processing machinery, equipment, tools;
Pipeline corrosion technology, equipment, pipe fittings; pipe welding, heat treatment technology and equipment;
Channel measurement, test equipment, monitoring equipment, test equipment, research and development;
Tube: a variety of joints, elbows, tees, cross, reducers, flanges, pipe, pipe cap, head parts, accessories, etc.
Show Overview: Belgium International Pump, Valve and Equipment Exhibition, is the pump and valve industry professional exhibition, held every two years, the European pump, valve industry, the professional development of the oldest one, the exhibition
Will mainly industrial pumps, valves and fittings, accessories based.
2006, the organizers added the filter series, this session will be in the "pump and valve industry exhibition of new technology," based on efforts to develop "mixers and mixer products" Exhibitors will also introduce the " pipelines and pipeline Series Pavilion. "
The show exhibitors are mainly distributors and importers, manufacturers, engineering companies, assembly companies, training, counseling centers, control centers, service agencies and the media
Visiting traders mainly from the petrochemical, natural gas, food, beverage, pharmaceutical, sewage treatment and other industries. Trade fairs in 2006 to 207 exhibitors will be home in 2004 increased 11% in the last 3 days of the exhibition, there have been 5054 visitors professional customers, an increase of 8% over the previous, The vast majority of European merchants. Exhibition area has reached a 10000m .
Compared with the other exhibitions, Belgium International Pump, Valve and system development have the following characteristics: First, professional and strong, the market specifically targeted and the target market; Second, the region is the global pump Valves and accessories manufacturers, suppliers for Europe, Middle East and Africa, pumps and valves importers, distributors and end users the ideal place.
Belgium International Pump, Valve and its system, the exhibition is the second largest in the world petrochemical industry is highly concentrated area: Antwerp - Rotterdam area trade show held for the European pumps, valves and other related industry information transfer, market integration provide many opportunities and a wider commercial platform.
2008, Belgium International Pump, Valve and Equipment Exhibition, the first time, exhibitors and opening of China, Beijing CIEC International Exhibition International Exhibition Co., Ltd. as the sole agent in China for the Chinese pump, valve-related industries and enterprises to explore international market demand, especially to the organizing committee for "ChinaPavilion" Pavilion exhibition area.
Contact Unit Beijing CIEC International Exhibition Co., Ltd. Global
Contact: Jiang Wei TEL :010-51654222-828 85592930 85592970 51654111 1318441617
Http: / / www.cewfair.com MSN: gaokaixin@hotmail.com
E-mail: cewfair4@cewfair.com
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