★Design for high temperature resistance
    The valve with high performance and metal seal adopts partial stellite seal ring to realize high temperature resistance for 350 ℃.
    The unique body structure with long stem can effectively increase the distance between the actuator and high temperature medium, which has a better heat dissipation performance.
    ★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.
    ★Patent for tiny flow control technology
    The unique patent technology for the plug design is especially suitable for the various fields of the tiny flow regulation and control.
    The patent technology for tiny flow control: the tiny flow ≤ 1m³/h(gas), 1t/h（liquid）
    Patent No.：ZL201020225917.9
    ★High precision, Small gyration error
    Unique integrated structure for the stem and plug can effectively solve the problem of mechanical gyration error. The gyration error is less than 0.5%.
    ★Allowing a great pressure drops
    The pressure drops resistance reaches more than 1.0MPa
    ★The valve owns a self-cleaning function to effectively guarantee the piping circulating.
    The scissors opening between the valve seat and the trim can easily cut off all kinds of impurities in the pipeline to effectively guarantee the pipeline circulating.
    ★Good seal performance
    The Innovative & improved metal seal valve has the sealed surface of flange without screw hole to enhance the sealing strength, which can effectively avoid the danger of surface leakage for the metal sealed valve’s flange surface, the sealing level is grade V.
    ★Erosion resistance, design for free maintenance
    The valve has the advantages such as straight-through structure, simple channel, small flow resistance, erosion resistance and no jam.
    The valve never needs maintenance from the beginning of first operation, which effectively saves the maintenance cost.
    ★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.

    Valve size: DN15-DN250
    Body ratings: PN1.6MPa
    Body connections: Wafer，Flange
    Seat type: Stainless steel moveable metal seal、PTFE soft seal
    Action time: 30 S（0-90°）
    Power supply: AC220V
    Control signal: 4～20mA 0～5V
    Output signal: 4～20mA 0～5V
    Operating pressure: PN1.6Mpa PN2.5Mpa
    Medium Temp. ≤350℃
    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: Mine pulp, coal pulp, paper pulp, water, oil, gas.
    Dead zone: 0.5%
    Repetition error: 0.5%
    Body material: SUS304 SUS316 WCB