Pneumatic V-shaped regulating lining PFA ball valve

Q6S41PFAPneumatic V-shaped regulating lining PFA flange ball valve

Product Introduction:

Pneumatic V-shaped regulating lining PFA ball valveQ641PFA-16C Pneumatic Fluorine lined Regulating V-shaped Ball ValveQ6S41PFA-16CEquipped with locatorpneumatichandwheelV-shaped regulating lining PFA ball valve/Pneumatic lined fluorine V-type cut-off ball valve/Automatic reset when power is cut off/Single acting pneumatic lined soluble polytetrafluoroethylene V-type regulating ball valve/Pneumatic PFA lined V-type regulating ball valve/Single acting pneumatic V-type regulating PFA ball valve/Fault automatic reset pneumatic lined fluorine V-type cut-off ball valve/Pneumatic lined fluorine control valveComposed of a pneumatic actuator and a fluorine lined PFA ball valve, it is used in conjunction with a valve positioner to achieve proportional adjustment; Used in conjunction with a two position five way solenoid valve and control box, it can achieve switch control. The valve core of the V-shaped ball valve is designed with a special V-shaped port that can achieve adjustment accuracy according to different angles. Pneumatic fluorine lined ball valves are suitable for various control applications. The advantages include high rated flow coefficient, large adjustable ratio, excellent sealing performance, compact structure, small volume, and the ability to be installed vertically and horizontally. Due to the seamless rotation between the valve core and valve seat, it has great shear and self-cleaning ability, especially suitable for controlling suspensions containing fibrous or soft particles. The inner wall of the valve body and the components inside the valve that come into contact with the fluid are all treated with high-temperature molding and fluorine plastic lining technology, coated with a layer of corrosion-resistant materials such as perfluoroalkoxy (F46), polytetrafluoroethylene (PTFE), soluble polytetrafluoroethylene (PFA), etc., which can cut off the contact between corrosive media and the valve outer shell. It has good sealing performance, sensitive action, V-shaped fluid channel, small pressure drop loss, large valve capacity, flow characteristics, and can be equipped with electric pneumatic valve positioning or pneumatic valve locator to achieve automatic adjustment and control of the process pipeline fluid medium. It is widely used for controlling highly corrosive media such as acids and alkalis, as well as toxic, volatile, and permeable gas and liquid media.

Features:

2. Large circulation capacity and unrestricted flow direction of the medium.

3. Good sealing performance and low leakage: The sealing valve seat is made of polytetrafluoroethylene, which has reliable sealing and self-lubricating properties, and low leakage.

4. In addition to being suitable for general gases and liquids, it is more suitable for media with high viscosity and fibrous and suspended soft particles.

5. The structure is simple and easy to maintain.

6. The gear rack pneumatic actuator structure with multiple springs, as well as the electric actuator with angular travel, are widely used in various environments and are currently in high demand for control.

Structural principle:

1. Using compressed air as the energy source to complete the switching action, when compressed air is input into the pneumatic actuator from the nozzle, the gas will push the piston to move towards both ends, and through the rack, drive the gear on the rotating shaft to rotate, thereby opening the valve. When the pneumatic actuator is closed, the gas source enters from the reverse nozzle and will push towards the middle, driving the valve to close. This cylinder is a double acting cylinder.

2. Using compressed air as the energy source to complete the switching action, when compressed air is input into the pneumatic actuator from the nozzle, the gas will push the piston to move towards both ends, and through the rack, drive the gear on the rotating shaft to rotate, thereby opening the valve. When the reverse nozzle exhausts, the spring will push the piston to drive the valve to close. This cylinder is a single acting cylinder.

3. The actuator and regulating mechanism of pneumatic actuators are a unified whole, and the components of the actuator can be selected from capsule, piston or gear rack, among which gear rack is more commonly used. The gear and rack actuator has a compact structure, high output driving force, and stable and reliable action, making it the most balanced component among the three types of actuators in terms of performance.

Main technical parameters:

Main performance and technical indicators:

Common materials for main components:

summary:

The lining of the pneumatic PFA ball valve uses PFA to comprehensively thicken the lining of the valve body, ball body, valve chamber, and medium contact surface, improving its corrosion resistance. PFA lined ball valves, also known as fluoroplastic lined corrosion-resistant valves, use high-pressure injection molding technology to line the inner cavity and ball body of PFA lined ball valves with corrosion-resistant and anti-aging soluble polytetrafluoroethylene (PFA), which has reliable corrosion resistance and sealing performance. Widely used in industrial sectors such as chemical, petroleum, metallurgy, and pharmaceuticals to regulate or cut off highly corrosive media such as acids and alkalis during production processes.

Features:

1. Excellent chemical corrosion resistance

2. Stable and reliable lining

3. The pursuit of heat resistance performance

PFA resin has extremely excellent thermal stability, even when exposed to high temperatures for a long timeThere will be no aging phenomenon even in a high temperature environment of 260 ℃ (actual working temperature ≤ 180 ℃).

4. Prevent fluid contamination

5. Excellent resistance to thermal and mechanical impact values

6. Simple opening and closing operation

7. Cost reduction of lining

8. Support automation

Pneumatic and electric actuators can be installed as standard.

The difference between single acting pneumatic actuators and double acting pneumatic actuators:

Single acting and double acting pneumatic ball valves refer to the pneumatic actuators equipped with pneumatic ball valves, which can be divided into single acting and double acting. The difference is that a single acting cylinder has a spring inside, while a double acting cylinder does not. Therefore, the price of single acting pneumatic actuators is higher than that of double acting pneumatic actuators.

Single acting pneumatic actuators are generally divided into normally open and normally closed types (normally open type: ventilation closed, gas cutoff open; normally closed type: ventilation open, gas cutoff closed). That is to say, there is a setting before installation, which sets it as open or closed. If it is normally open, it means that the pneumatic actuator closes the valve under ventilation. If the gas source fails or there is a sudden power outage, the single acting pneumatic actuator will automatically reset to the open state by the spring, which means it will return to its set state. If it is set as closed, it will return to the closed state. It is generally used more in dangerous working conditions, such as transporting flammable gases or liquids, and in emergency situations when the gas source is lost. At this time, single acting pneumatic actuators can automatically reset to reduce danger, while double acting actuators cannot reset.

The double acting pneumatic actuator opens the valve when it is ventilated, and can only be closed when the other side is ventilated. The double acting pneumatic actuator is reset by the cylinder and can only remain in place when the air source is lost.

What isPFA？

PFA plastic is a copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene. The melt adhesion is enhanced, and the viscosity of the solution decreases, while the performance remains unchanged compared to polytetrafluoroethylene. This type of resin can be directly processed into products using ordinary thermoplastic molding methods. Suitable for producing corrosion-resistant parts, wear-resistant parts, seals, insulation parts, and medical device components, insulation layers for high-temperature wires and cables, anti-corrosion equipment, sealing materials, pump valve liners, and chemical containers.

Introduction to the anti-corrosion performance of lining plastic:

1. Perfluoroethylene propyleneFEP(F46)

Features:The mechanical, electrical, and chemical stability of F46 resin are basically similar to polytetrafluoroethylene, but its outstanding advantage is high impact toughness. Even samples with notches cannot withstand impact, which is very goodIts weather resistance and radiation resistance make it easy to shape and process. Except for using at temperatures lower than F4, all other properties maintain the excellent performance of F4, making it a substitute material for polytetrafluoroethylene.

2. PolytetrafluoroethylenePTFE（F4)

Features:Due to the unique molecular chemical chain structure, F4 resin has strong corrosion resistance and high temperature resistance. However, polytetrafluoroethylene has the disadvantage of difficult processing, with a high scrap rate during production, resulting in higher processing costs than F46.

3Soluble polytetrafluoroethylene（PFA）

Features:PFA resin is a new variety developed to overcome the difficulties in processing and molding polytetrafluoroethylene, while maintaining the excellent performance of F4. Good mechanical and electrical insulation performance, with the advantage of easy processing and shaping, making it a substitute material for polytetrafluoroethylene.

4. Enhanced polypropylene（FRPP）

Characteristics: It is one of the lighter plastics, with yield strength, tensile strength, and compressive strength superior to polyethylene. It has outstanding rigidity, heat resistance, and ease of molding. After modification, the impact and fluidity have been improved.

5. Polyolefin（PO）

PO has good corrosion resistance and easy processing performance, and is widely used in various anti-corrosion equipment for rotational molding, as well as in molded lining valves.

Execution mechanism parameters:

Executing Agency:

Adopting GT, AT, AW series pneumatic actuators, with double acting and single acting (spring reset), gear rack transmission, safe and reliable; The large-diameter valve adopts a series of AW type pneumatic actuator fork type transmission, with a reasonable structure and large output torque, and is available in double acting and single acting types.

1. Gear type dual piston, with large output torque and small volume.

2. The cylinder is made of aluminum alloy material, which is lightweight and aesthetically pleasing.

3. Manual operating mechanisms can be installed at the top and bottom.

4. The rack and pinion connection can adjust the opening angle and rated flow rate.

5. The actuator can be equipped with live signal feedback indicators and various accessories to achieve automated operation.

6. The IS05211 standard connection provides convenience for the installation and replacement of products.

7. The adjustable screws at both ends provide a ± 4 ° adjustable range for standard products between 0 ° and 90 °. Ensure synchronization accuracy with the valve.

Options for attachments:

According to different controls and requirements, the following attachments can be selected:

Cut off accessories: single electric control solenoid valve, dual electric control solenoid valve, limit switch feedback device.

Adjustable accessories: electrical locator, pneumatic locator, electrical converter.

Air source processing accessories: air filter pressure reducing valve, air source processing triad.

Manual mechanism: HVSD manual control mechanism

Outline structure diagram:

Main external connection dimensions:

Installation and usage precautions:

1. Remove the protective covers on both sides of the flange end and rinse and clean with the valve * open.

2. Before installing the pneumatic control valve, a complete machine test should be conducted according to the specified signal (electric or pneumatic) to prevent vibration from affecting performance during transportation. Only after passing the test can it be installed online (wiring should follow the electric actuator circuit diagram).

3. Before connecting to the pipeline, it is necessary to flush and remove any remaining impurities in the pipeline (which may damage the valve seat and ball).

4. During installation, please do not use the actuator part of the pneumatic valve as a lifting point to avoid damaging the actuator and components.

5. Pneumatic regulating ball valves should be installed in the horizontal or vertical direction of the pipeline.

6. The pipeline near the installation point should not have any low hanging or external force bearing phenomenon. Pipe supports or supports can be used to eliminate the deviation of the pipeline.

7. After connecting to the pipeline, please cross tighten the flange connection bolts with the specified torque.

8. If the valve body is lined with an anti-corrosion layer, a corrosion-resistant soft pad should be used when installing it on the pipeline, and care should be taken not to damage the sealing surface of the valve body flange.

9. The packing gland should be inspected regularly to prevent damage to other parts and accidents caused by leakage and corrosion.

Henan Kiston Valve mainly produces and sells【Pneumatic V-shaped regulating lining PFA ball valveQ6S41PFA-16C Pneumatic Fluorine lined Regulating V-shaped Ball Valve/with PositionerpneumatichandwheelV-shaped regulating lining PFA ball valve/Pneumatic lined fluorine V-type cut-off ball valve/Automatic reset when power is cut off/Single acting pneumatic lined soluble polytetrafluoroethylene V-type regulating ball valve/Pneumatic PFA lined V-type regulating ball valve/Single acting pneumatic V-type regulating PFA ball valve/Fault automatic reset pneumatic lined fluorine V-type cut-off ball valve/Pneumatic lined fluorine control valve】We have a large inventory of spot goods available for direct sales at factory prices! We have always adhered to the concept of "reasonable price and thoughtful service", striving to provide customers with reliable products and comprehensive after-sales service. All text, data, and images in this article are for reference only.