What is the meaning of dn500 electric butterfly valve wholesale? The upper and lower seats of ZGT type damping butterfly valve electric butterfly valve (closed type) are equipped with anti-skid pads. For the equipment with small disturbance and low emphasis, the ZGT type damping butterfly valve electric butterfly valve (closed type) electric butterfly valve can be directly placed under the equipment damping pedestal without fixing: WGD1 type upper seat is equipped with bolts and equipment fixing. Product advantages: 1. Cast steel shell, alloy steel butterfly valve, and plastic spraying treatment, Good weather resistance, effectively increasing service life, and good shockproof effect