Explosion proof pneumatic stainless steel American standard ball valve

Q641F-150LB Pneumatic Stainless Steel American Standard Ball Valve Q641F-300LB

Product Introduction:

Explosion proof pneumatic stainless steel American standard ball valveQ641F-300LBR Explosion proof Pneumatic American Standard Stainless Steel 316 Ball Valve Q641F-150LBR Explosion proof Single acting Pneumatic Stainless Steel American Standard Ball Valve Q641F-300LBR Fault Automatic Reset Explosion proof Pneumatic American Standard Stainless Steel 316 Ball Valve Q641F-150LB Explosion proof American Standard Pneumatic Ball Valve Q641F-300LB Explosion proof Single acting American Standard Pneumatic Ball Valve Q641F-300LB Explosion proof Pneumatic American Standard 300 Pound Ball Valve Q641F-150LB Explosion proof Pneumatic American Standard 150 Pound Ball Valve Q641F-300LBP Explosion proof Pneumatic American Standard Stainless Steel 304 Ball Valve Q641F-150LBP Explosion proof Pneumatic American Standard CF8 Stainless Steel Ball Valve Q641F-300LBRL Explosion proof Pneumatic American Standard Stainless Steel 316L Ball Valve Q641F-150LBRL Explosion proof Pneumatic Dynamic American standard CF3M stainless steel ball valve Q641F-300LBR explosion-proof pneumatic American standard stainless steel CF8M ball valve Q641F-150LBR explosion-proof pneumatic American standard 316 stainless steel ball valve/pneumatic American standard ball valve Q641F-150LB pneumatic American standard pound grade ball valve Q641F-300LB Pneumatic American standard flange ball valve/Pneumatic American standard stainless steel ball valve/Pneumatic American standard cut-off ball valve/Pneumatic American standard carbon steel ball valve/Pneumatic American standard cast steel ball valve/Pneumatic American standard switch type ball valve/Pneumatic American standard regulating ball valve/Pneumatic American standard ball valve with manual and handwheel/Pneumatic American standard soft seal ball valve/Pneumatic American standard hard seal ball valveIt is composed of American standard ball valves, pneumatic actuators, and other related accessories. It is driven by a gas source to control the opening and closing of the valve. It is equipped with a travel limit switch, solenoid valve, pressure reducing valve, and a 0.4-0.7MPa gas source to achieve switch operation, and sends two pairs of passive contact signals to indicate the opening and closing of the valve. Pneumatic ball valves have excellent sealing performance, large flow capacity, simple structure, long service life, and are easy to maintain. The accompanying actuator has the characteristics of simple structure, compact size, excellent performance, and large output torque. There are two types of actuators: single acting and double acting. The advantage of single acting is that once the power source fails, the ball valve will automatically be in the open or closed position according to the requirements of the control system. Widely used in industrial fields such as chemical, petroleum, textile, power, food and pharmaceutical, refrigeration, papermaking, etc., it can not only control gas, liquid and steam media, but also be suitable for controlling sewage and fiber containing substances. Valve positioners can be installed according to the working conditions, and 4-20mA analog signals can be input to achieve percentage adjustment control of the ball valve opening size.

Overview:

The valve body channel and connecting pipe diameter of the ball valve are equal and form a diameter, allowing the medium to flow almost without loss. According to its sealing performance, it can be divided into soft sealed valve seats and metal sealed valve seats. Soft sealed valve seats are suitable for temperatures ≤ 180 ° C, while metal hard sealed valve seats are suitable for temperatures ≤ 425 ° C. Usually used in occasions with strict sealing requirements, in addition to controlling gas, liquid, and steam media, it is also suitable for controlling sewage and media containing fibrous impurities. It is widely used in various fields such as petroleum, chemical, metallurgical, light industry, papermaking, power plants, refrigeration, etc.

Product Features:

1. Low fluid resistance, ball valve is one of the valve types with the lowest fluid resistance Z, even for reduced diameter ball valves, its fluid resistance is quite small.

2. The ball valve is equipped with a thrust bearing to reduce the friction torque of the valve stem, which can make the valve stem operate smoothly and flexibly for a long time.

3. The valve seat has good sealing performance, and the sealing ring is made of elastic materials such as polytetrafluoroethylene. The structure is easy to seal, and the sealing ability of the ball valve increases with the increase of medium pressure.

4. The valve stem seal is reliable. As the valve stem only rotates without lifting, the packing seal of the valve stem is not easily damaged, and the sealing ability increases with the increase of medium pressure.

5. Due to the good self-lubricating properties of materials such as polytetrafluoroethylene, the friction loss with the ball is small, resulting in a long service life of the ball valve.

6. The bottom mounted valve stem and the protruding step at the head of the valve stem prevent the valve stem from spraying out. In the event of a fire causing damage to the valve stem seal, the protruding step can also form a metal contact with the valve body to ensure the valve stem seal.

7. Anti static function: Install springs between the ball, valve stem, and valve body to dissipate static electricity generated during the switching process.

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.

The difference between single electronic control solenoid valve and dual electronic control solenoid valve:

Single electronic control:There is only one electromagnetic coil, usually used in 2-position three-way solenoid valves, and the coil voltage level is generally DC24V, AC220V, etc. Two position three-way solenoid valves are divided into two types: normally closed and normally open. The normally closed type refers to the air circuit being disconnected when the coil is not powered, while the normally open type refers to the air circuit being connected when the coil is not powered. The operating principle of a normally closed two position three-way solenoid valve is to energize the coil and connect the air circuit. Once the coil is powered off, the air circuit will be disconnected, which is equivalent to "inching". The operating principle of a normally open two position three-way single electric control solenoid valve is: when the coil is energized, the air circuit is disconnected. Once the coil is de energized, the air circuit will be connected, which is also called "inching".

Dual electronic control:There are two electromagnetic coils, usually used in two position five way solenoid valves. The operating principle of the two position five way dual electric control solenoid valve is: when the positive action coil is powered on, the positive action air circuit is connected (the positive action air hole is filled with air). Even if the positive action coil is powered off, the positive action air circuit is still connected and will be maintained until the reverse action coil is powered on. If the reverse action coil is powered on, the reverse action air path will be connected (there is air in the reverse action air hole). Even if the reverse action coil is powered off, the reverse action air path will still be connected and will be maintained until the positive action coil is powered on. This is equivalent to 'self-locking'. Based on the characteristic of two five way dual electric control solenoid valves, when designing electromechanical control circuits or programming PLC programs, the solenoid valve coil can be operated for 1-2 seconds to protect it from damage.

Structural principle:

Pneumatic ball valve is a rotary cut-off ball valve, which is the execution unit in pneumatic unit combination instruments and is generally used in combination with pneumatic components such as solenoid valves. There are two types of valve body structures: soft sealed valve seats and all metal valve seats, which are used for normal temperature (-40~180 ℃) and high temperature (-60~450 ℃) applications, respectively. This product has high transmission efficiency, high thrust, good sealing performance, high rated flow coefficient, and strong interchangeability of parts.

Working Principle:

Pneumatic ball valves are generally used in combination with accessories such as solenoid valves and limit switches. They use pneumatic actuators such as GT, AT, AW, etc., which have high output force, sensitive action, and can effectively open and cut off. Its cylindrical through-hole spherical valve core has shear function, and its effect on controlling viscous media such as fibers and particles is second only to V-shaped ball valves.

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

Functions and uses of supporting pneumatic actuators and pneumatic accessories (optional):

1. Double acting actuator: controls the opening and closing of valves.

2. Single acting actuator (spring reset): automatically closes the valve when the circuit air path is cut off or there is a fault.

3. Single control solenoid valve: The valve opens or closes when powered on, and closes or opens when powered off (explosion-proof type available).

4. Dual control solenoid valve: The valve opens when one coil is energized and closes when the other coil is energized, with memory function (explosion-proof type available).

5. Limit switch feedback device: long-distance transmission of valve opening and closing position signals (explosion-proof type available).

6. Electrical locator: Adjust and control the medium flow rate of the valve based on the magnitude of the current signal (4-20mA) (explosion-proof type is available).

7. Pneumatic locator: Adjust and control the medium flow rate of the valve based on the size of the air pressure signal (standard 0.02-0.1MPa).

8. Electrical converter: converts current signals into air pressure signals and is used in conjunction with pneumatic locators (explosion-proof type available).

9. Triple components for air source treatment: including air pressure reducing valve, filter, oil mist device, stabilizing and cleaning the air source, and lubricating the moving parts.

10. Manual operation: Automatic control can manually operate the opening and closing of valves under abnormal conditions.

Technical parameters and performance:

150Lb external dimensions:

300Lb external dimensions:

Attachment options:

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

Feedback switch: also known as limit switch, remote feedback switch signal (optional explosion-proof).

Electromagnetic valve: Double acting with two position five way valve, single acting with two position three way valve (optional explosion-proof).

Triple component: capable of stabilizing the gas source, filtering, and adding lubricating oil to the cylinder.

Handwheel mechanism: Rotate the handwheel mechanism to manually open and close the valve.

Electrical locator: Input 4-20mA signal to achieve valve adjustment function.

Ordering instructions:

1. Pneumatic actuator type: double acting, single acting

2. Type of medium, temperature, pressure

3. Required accessories: solenoid valve, locator, signal feedback, air source processing triad, manual mechanism

Shanghai Qiaoyi Valve mainly produces and sells【Explosion proof pneumatic stainless steel American standard ball valveQ641F-300LBR Explosion proof Pneumatic American Standard Stainless Steel 316 Ball Valve Q641F-150LBR Explosion proof Single acting Pneumatic Stainless Steel American Standard Ball Valve Q641F-300LBR Fault Automatic Reset Explosion proof Pneumatic American Standard Stainless Steel 316 Ball Valve Q641F-150LB Explosion proof American Standard Pneumatic Ball Valve Q641F-300LB Explosion proof Single acting American Standard Pneumatic Ball Valve Q641F-300LB Explosion proof Pneumatic American Standard 300 Pound Ball Valve Q641F-150LB Explosion proof Pneumatic American Standard 150 Pound Ball Valve Q641F-300LBP Explosion proof Pneumatic American Standard Stainless Steel 304 Ball Valve Q641F-150LBP Explosion proof Pneumatic American Standard CF8 Stainless Steel Ball Valve Q641F-300LBRL Explosion proof Pneumatic American Standard Stainless Steel 316L Ball Valve Q641F-150LBRL Explosion proof Pneumatic Dynamic American standard CF3M stainless steel ball valve Q641F-300LBR explosion-proof pneumatic American standard stainless steel CF8M ball valve Q641F-150LBR explosion-proof pneumatic American standard 316 stainless steel ball valve/pneumatic American standard ball valve Q641F-150LB pneumatic American standard pound grade ball valve Q641F-300LB Pneumatic American standard flange ball valve/Pneumatic American standard stainless steel ball valve/Pneumatic American standard cut-off ball valve/Pneumatic American standard carbon steel ball valve/Pneumatic American standard cast steel ball valve/Pneumatic American standard switch type ball valve/Pneumatic American standard regulating ball valve/Pneumatic American standard ball valve with manual and handwheel/Pneumatic American standard soft seal ball valve/Pneumatic American standard hard seal ball valve】We have a large inventory of spot sales! We have always adhered to the concept of "reasonable price and thoughtful service", striving to provide customers with reliable products and after-sales service. All text, data, and images in this article are for reference only.