★The flow modulation characteristics
    Unique V type structure for the trim solves the control stability problem of traditional ball valve. For the stability of flow regulation and the percentage properties, make the opening degree between the control object and the valve tend to linearity. When the valve opens, the flow increases very slowly. The trim type determines the valve properties, so different opening type of trim , and so the same diameter of the valve has different CV values and flow properties.
    ★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.
    ★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 large 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 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, no jam ,and erosion resistance.
    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.

    Body size: DN15-DN250 (Please contact us for the detailed data of the larger size valve.）
    Body ratings: PN1.6MPa
    Body connections: Wafer, flange
    Seat type: Stainless steel moveable metal seal、PTFE Soft seal
    Body material: SUS304 SUS316 WCB
    Plug material: SUS304 SUS316 WCB
    Action time: 30S（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.
    Dear zone: 0.5%
    Repeatability error: 0.5%

Maximum allowable leakage

The material of the standard structure

The implementation standards of the electric control valve