★Small volume and light weight, easy to disassemble and maintain, and can be installed in any position
    The valve with non-pin structure can effectively avoids the pin break off in a long time operation.
    With simple and reliable working principle, the body can be installed in the least space.
    With two-way sealing function, the valves can be installed in any direction and not be affected by the spatial position and the medium flow.
    ★Small pressure drops, Large flow capability.
    This valve has the large flow capability and very small pressure loss.
    ★The patent positioning technology
    PPD positioning technology completely solves the problem of poor positioning accuracy and a major application difficult of long time reliable operation.
    ★Small operating torque, energy saving.
    The valve has small volume, light weight, reliable performance, simple matching, large flow capacity, especially suitable for the medium such as clean liquid and gas.
    Configured with a standard convex pipe flange, the body has high cost-effective, especially large diameter butterfly valve. (Prefer to butterfly valve in the occasions of middle and low pressure),and superior cost-effective performance makes the butterfly valves have a broad scope of applications.
    ★Linearity flow characteristics，Excellent regulated performance.
    The flow characteristic is approximate to EQ%, and the same body can afford two kinds of function choices including switch action and modulation action.
    ★Simple and compact structure
    The solid state electronic type electric actuator with the electrical integration structure has the functions including the machine internal servo operation, opening signal location feedback, position indication, manual operation and so on.
     The valve has powerful function, reliable performance, simple connection, accurate control, small volume, lightweight, small flow resistance, big flow coefficient, simple structure, good seal performance.
    ★Long service life, good seal performance.
    More than 50,000 operation life without fault, keep your system operating safely and reliably.
    The seal parts materials are mate of stainless steel and nitrile oil-proof rubber for a long service life.
    ★The new technology for Direct Debugging Switch(DDS) in electric actuators.
    Easy to use! Design by GRAT in China.
    It completely solved the problem of complex debugging and make the technology simpler.
    The debugging can be simplified from 5 steps to 1 step.
    The debugging for electrical and mechanical position can be easy achieved through rotating the knob on the top of the dial after electric actuators and valves are assembled together.

    Body ratings: PN1.0/PN1.6Mpa
    Body ratings: DN40-DN800
    Seal material: EPDM、PTFE
    Stem seal: NBR、HNBR
    Body material: HT2000/ Gray cast iron, ductile cast iron/QT450
    Disc material: Ductile cast iron QT450（electroplating, spray）、SUS304 Stainless steel、SUS316 Stainless steel
    Body connections: Wafer
    Flange: Special flange for butterfly valve
    Power supply: AC220V  50HZ
    Control signal: switch action、modulation action 4～20mA 0～5V
    Output signal: switch position indication、passive contact feedback、feedback 0-1KΩ、4～20mA 0～5V
    Operating pressure: PN1.6Mpa Medium Temp. ≤120℃（The higher level of temperature resistance is prepared）
    Ambient Temp. ≤50℃
    Flow coefficient（CV）: Please download the data on our website for reference。(Custom flow coefficient depends on the customer’s requirement.)    Applicable medium: Water, oil, gas, corrosive medium. 

Main technical parameters of the electric butterfly valve

The main parts materials of the electric butterfly valve

The implementation standards of the electric butterfly valve

The properties specification