1、 Overview of Electric Fixed Ball ValveDescribe

Q947Electric fixationBall valveSuitable for situations where two are cut off or adjusted. The connection between the valve and the actuator adopts a direct connection method,Electric actuatorAdministrative institutionsBuilt in servo system, no need for additional servo amplifier, input 4-20mA signal and 220VAC power supply to control operation. It has the advantages of simple connection, compact structure, small size, light weight, low resistance, stable and reliable action. The actuator can be configured with electronic electric actuators such as UNIC, PSQ, HQ, DHL, or pneumatic piston actuators such as GTX and AL according to user requirements.

2、 Electric fixed ball valve execution standard

2. Flange size: JB/T74～90（JB74～90）、GB9112～9131、HGJ44～76、SH3406、ANSI B16.5、JIS B2212～2214、NF E29-211、DIN2543。
3. Structural length: GB12221-89, ANSI B16.10, JIS B2002, NF E29-305, DIN3202.

3、 Electric Fixed Ball Valve Specification Parameters for Electric Ball Valve

The CH series actuator can directly receive 4-20mADC or 1-5VDC control signals output by computers or industrial instruments, with a 220VAC power supply. Based on the deviation between the valve position feedback signal and the set value, the actuator drive motor is intelligently step adjusted (PID adjusted) to achieve precise positioning of the valve or other device opening that matches the actuator, while outputting 4-20mADC position feedback signals. Its core control component, the electronic servo controller, is designed using modern digital technology and DCS/PLC specifications, integrating signal acquisition, processing, feedback, and control. Adopting a unique electronic braking circuit and adding a mechanical damping device to eliminate inertia, it can instantly stop the machine without oscillation during positioning, and the positioning accuracy can reach over 0.3%. Controllable silicon output, fast action time, stable output, high reliability. Small size, lightweight and pleasant, reliable performance, simple matching, high flow capacity, especially suitable for occasions where the medium is viscous, contains particles, and has fiber properties. At present, this valve is widely used in industrial control coefficients in industries such as food, environmental protection, light industry, petroleum, papermaking, chemical engineering, teaching and research equipment, and power.

4、 Features of electric fixed ball valve products

Q47 fixed ball valve is a new generation of high-performance ball valve, suitable for long-distance pipelines and general industrial pipelines. Its strength, safety, and resistance to harsh environments have been specially considered in the design, and it is suitable for various corrosive and non corrosive media. Compared with floating ball valves, during operation, all the force generated by the fluid pressure in front of the valve on the ball is transmitted to the bearing, which will not cause the ball to move towards the valve seat, so the valve seat will not bear excessive pressure. Therefore, fixed ball valves have smaller torque, smaller valve seat deformation, stable sealing performance, and longer service life, making them suitable for high-pressure and large-diameter applications. Advanced spring pre seat components with self tightening characteristics achieve upstream sealing. Each valve has two valve seats, which can seal in each direction, so there is no flow restriction during installation, and it is bi-directional.
This valve has two types of valve body structures: two-piece and three piece. The middle flange is connected by bolts, and the seal is made of reinforced polytetrafluoroethylene embedded in a stainless steel ring. There is no spring at the back of the steel ring to ensure that the valve seat is tightly attached to the ball, maintaining a seal. There are no PTFE bearings on both the upper and lower valve stems, reducing friction and making operation effortless. There are no adjustment plates at the bottom of the small shaft to ensure the joint position between the ball and the sealing ring.
Full bore: The flow aperture of the valve is consistent with the inner diameter of the pipeline for pipeline cleaning

(1) Effortless operation: The ball is supported by upper and lower bearings, reducing friction and eliminating excessive torque caused by the huge sealing load formed by the inlet pressure pushing the ball and the sealing seat.

(2) Reliable sealing performance (see Figure 1): The PTFE single sex material sealing ring is embedded in the stainless steel valve seat, and a spring is installed at the end of the metal valve seat to ensure sufficient pre tightening force of the sealing ring. When the sealing surface of the valve wears out during use, the valve continues to ensure good sealing performance under the action of the spring.

(3) Fireproof structure (see Figure 2): To prevent the PTFE sealing ring from burning out due to sudden heat or fire, causing significant leakage and fueling the fire, a fireproof sealing ring is installed between the sphere and the valve seat. When the sealing ring burns out, it is quickly pushed onto the sphere by the spring force, forming a metal to metal seal and achieving a certain degree of sealing effect. The fire resistance test meets the requirements of APl 6FA and APl 607 standards.

(4) Automatic pressure relief function (see Figure 3): When the pressure of the stagnant medium in the valve chamber abnormally increases beyond the pre tension force of the spring, the valve seat will retract and detach from the ball, achieving the effect of automatic pressure relief. After pressure relief, the valve seat will automatically reset.

(5) Drain pipeline: Drain plugs L are installed on both the upper and lower parts of the valve body to check if there is any leakage in the valve seat. During operation, when the valve is fully open or fully closed, the pressure in the middle chamber can be relieved and the packing can be directly replaced; It can discharge the retained substances in the middle chamber and reduce the pollution of the medium to the valve. Auxiliary sealing setting system (please specify when ordering)

(6) Figure 4: This valve is designed with an auxiliary seat emergency sealing system. Once the seal is damaged or there is an emergency situation where it cannot be sealed, the corresponding sealing agent can be injected into the sealing surface through the auxiliary sealing system to repair the sealing surface and achieve emergency sealing. When the conveyed medium is unclean or contains a small amount of particles, in order to protect the sealing surface and ensure reliable sealing, corresponding cleaning agents or lubricants can be injected into this device to clean the sealing surface.

(7) Widely applicable for cutting off or circulating media in transportation pipelines such as food, medicine, petroleum, chemical, natural gas, steel, environmental protection, papermaking, etc. Corresponding cleaning agents or lubricants can also be injected into this device to clean the sealing surface.

Figure 1	Figure 2
Figure 3	Figure 4

5、 Technical parameters and performance of electric fixed ball valve

6、 Main component materials of electric fixed ball valve

7、 External dimensions of electric fixed ball valve

Structural diagram of electric fixed electric ball valve