Introduction Of 3pc Ball Valves

3pc ball valve full bore design with double internal teeth structure, using dewaxed precision casting technology to build the valve body, specially equipped with stem explosion-proof device, mainly used for pipeline medium cut-off and connection. This ball valve has a compact structure, reliable sealing performance, simple design, not only easy to repair, but also affordable, easy to operate and maintain.

    3PC ball valve belongs to the forced sealing type valve, when closing, it will exert pressure on the valve flap to ensure that the sealing surface is closely fit to prevent leakage. When the medium flows into the valve from underneath the flap, the operating force needs to overcome the friction between the valve stem and packing, as well as the thrust generated by the medium pressure. Therefore, the force to close the valve will be a little larger than the force to open the valve, which requires the stem diameter to be large enough, otherwise the problem of stem bending may occur.

    However, since the emergence of self-sealing valves, 3PC ball valves, the medium flow direction has changed from the top of the valve flap into the valve cavity! In this way, under the action of medium pressure, the force to close the valve is much smaller, while the force to open the valve is relatively large, the diameter of the valve stem can be reduced accordingly, under the action of the medium, this form of sealing performance of the valve is also more excellent, when the 3PC ball valve is open, the valve flap opening height is only required to reach the nominal diameter of the 25% to 30%, the flow rate has been reached the maximum, which means that the valve is already in the Fully open position. Therefore, the fully open position of the ball valve is determined by the travel of the valve flap.

    Our company launched a variety of types of 3pc ball valves, such as 3 piece stainless steel ball valve, 3 piece ss ball valve and so on, have questions welcome to contact.