Established in 1993, Guanfa Valve Manufacture Co., Ltd. is specialized China fisher valve manufacturer and distributor of valves, hoses, tubes and pipes. Our oem fisher valves are suitable for acid, alkali, water, steam, seawater, coal gas and natural gas. They are widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy. The use of specialized software of Pro/E and CAD has shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of products. Our high-quality products have been exported to the North Amercia, UK, USA, Germany, Italy, India, France, Australia, Japan.

The Fisher span array of instruments is almost as large as its valve offerings. In the valve accessory area, positioners, digital valve controllers, levels, pressure controllers, transducers, transmitters, and trip valves are all instruments which can improve your process control and add dollars to your bottom line. In recent years, Fisher has invested heavily in R&D on its digital line of instruments including the popular FieldVue span digital valve controller. Fisher offers a large spectrum of positioners that range from the basic rotary or sliding-stem pneumatic positioner to the FieldVue DVC, the most widely accepted digital valve controller on the market today. The basic valve positioner compares the valve signal with the actual valve position and corrects for any deviations to more closely align the valve to the incoming signal. In addition, the Fisher DVCs provide two-way communication via a number of protocols to allow diagnostic information to be passed to operators, maintenance, and I&E technicians.

Other valve accessories can be added to your control valve assembly depending upon your application needs. Fisher offers a number of electro-pneumatic transducers (I/Ps) for economical conversion of electric to pneumatic signals. Also available are position transmitters and limit switches for valve signaling, volume boosters to improve actuator speed, and trip systems for achieving the desired fail position with double-acting actuators.
In addition to valve accessories, Fisher also offers a wide selection of field devices for communicating or controlling the process variable. Popular models include digital, pneumatic, and electronic field instruments such as level, pressure, and temperature controllers, as well as level transmitters and pressure pilots. the Fisher DVC employs a micro-processor to more accurately position the valve and thus provide even better control.

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