Summary:
   Q11F three-piece ball valve is internal thread ball valve and butt welding connection ball valve is divided into integral type, two, three. The valve body casting adopts the advanced technology introduced from Taiwan with reasonable structure and beautiful appearance. The valve seat adopts the elastic sealing structure, sealing is reliable, opening and closing is easy. The valve stem is of bottom - mounted structure with inverted seal. There is also butt welding (BW) socket welding (SW), internal thread and can be equipped with international standard ISO support platform and locking device. Three type ball valve set 90 ° switch positioning mechanism, according to the need to lock to prevent wrong operation. Drive mode: manual, electric, pneumatic.


 
Material of Parts
Structure Drawing




Note: BW socket welding (SW) is also available for three - piece ball valve connection.

Method of Usage
Open Process:
1. In the closed position, the ball is mechanically pressed by the stem against the seat.
2. When turning the handwheel counterclockwise, the stem moves in the opposite direction, and the angular plane at the bottom of the stem disengages the ball from the seat.
3. The stem continues to lift and interacts with the guide pin in the stem spiral groove to start the ball to rotate frictionless.
4. Up to the full open position, lift the stem to the limit position and rotate the ball to the full open position.

Close Process:
1. When closed, turn the handwheel clockwise as the stem begins to descend and the ball starts to rotate away from the seat.
2. Continue to rotate the handwheel, the valve stem is embedded in the spiral groove on the role of the guide pin, the stem and ball rotate 90 ° at the same time.
3. Almost closed, sphere has been without contact with the valve seat rotated 90 °.
4. For the last few turns of the handwheel, the angular plane at the bottom of the stem mechanically wedges against the ball, pressing it tightly against the seat for a complete seal.

Company Introduction
Zhitai Valve Co., Ltd is a member of Valve Association of Longwan District, is located in Longwan Central Industrial Zone, Wenzhou City. It'a professional technology company integrated with development, manufacturing, sales, and after-sales services of valve actuators and and self-controlled valves. Presently, our main products include: pneumatic actuators, pneumatic valves and pneumatic control valves; electric actuators, electeic valves and eletric control valves; automatic control products. Our products are widely applied in natural gas, electricity, petroleum, chemical, metallurgical, construction, pharmacy, paper, printing and dying. Zhitai series actuators and valves are the best choice for automatic fluid control engineering and equipment manufacturing. We sincerely welcome customers from home and abrode to visit us for supervision, communication and cooperation. It's a great honor for us to cooperate with you.