Product Overview
The "O" type cut-off ball valve adopts a two piece ball valve structure for small diameters, and a three piece ball valve structure for large diameters. The valve body is composed of two parts: the main and auxiliary parts, and the ball core adopts a full diameter, with a high rated flow coefficient and low flow resistance. The surface of the ball core is hardened using a special process to make it smooth and wear-resistant. The sealing material of the valve seat is carbon fiber reinforced polytetrafluoroethylene, which has low wear of the valve seat, excellent sealing, long service life, and extremely strong cutting performance. The actuator adopts a high-performance dual piston gear rack structure or a fork type structure, with high transmission efficiency and compact structure, or an electronic electric actuator. This series of products has a nominal diameter range of DN15~500mm (1/2 "~20") and a nominal pressure rating of PN1.6~10.0MPa (150lb~600lb).

Product Features
Valve seat limiting structure (torque stability): The valve seat sealing ring is reasonably pre tightened and limited, greatly reducing operating torque; The bottom of the valve seat is equipped with a spring to maintain torque stability;
Valve stem anti flying design (safe and reliable): Bottom mounted valve stem prevents the valve stem from flying out due to high medium pressure, completely eliminating safety hazards;
Fire resistant design (can maintain sealing after fire): The soft sealing valve seat adopts a stainless steel seat with a sealing surface wrapped in a PTFE sealing ring combination valve seat, and there is a small gap between the stainless steel seat sealing surface and the ball. When the PTFE sealing ring is burned out by fire, the floating ball is pressed against the stainless steel seat under the pressure of the medium, and at the same time, it relies on the spring at the bottom of the seat to push the stainless steel seat against the ball core, forming a seal between the ball and the sealing surface of the stainless steel seat;
Antistatic device (it can lead out static electricity): a simple and easy to install Antistatic device, which makes the ball, valve rod and valve body always connected, and the static electricity generated by the friction of the sealing surface caused by the switch is led out;
Standard actuators: pneumatic and electric interchangeable.