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Henan Qiaoyi Valve Co., Ltd
Single acting explosion-proof pneumatic three-way ball valve
NegotiableUpdate on 02/07
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Overview
Q644W Single acting Explosion proof Pneumatic Three way Ball Valve Q645W Single acting Explosion proof Pneumatic Stainless Steel Three way Ball Valve Q644F Single acting Explosion proof Pneumatic L-type Three way Ball Valve Q645F Single acting Explosion proof Pneumatic T-type Three way Ball Valve Q644Y Explosion proof Pneumatic L-type Three way Ball Valve Q645Y Explosion proof Pneumatic T-type Three way Ball Valve/Q644W Single acting Explosion proof Pneumatic Three way Hard Sealed Ball Valve Q645W Single acting Pneumatic Stainless Steel Three way Ball Valve/Pneumatic Three way Ball Valve/Pneumatic Three way Switching to Ball Valve/Single acting Fault Automatic Reset Pneumatic Stainless Steel Three way Ball Valve is composed of pneumatic actuator, three-way ball valve and pneumatic triad.
Product Details
Q644F Pneumatic Three way Ball Valve Q645F
Product Introduction:
Q644WSingle acting explosion-proof pneumatic three-way ball valveQ645W Single acting Explosion proof Pneumatic Stainless Steel Three way Ball Valve Q644F Single acting Explosion proof Pneumatic L-shaped Three way Ball Valve Q645F Single acting Explosion proof Pneumatic T-shaped Three way Ball Valve Q644Y Explosion proof Pneumatic L-shaped Three way Ball Valve Q645Y Explosion proof Pneumatic T-shaped Three way Ball Valve/Q644W Single acting Explosion proof Pneumatic Three way Hard Sealed Ball Valve Q645W Single acting Pneumatic Stainless Steel Three way Ball Valve Q644F Pneumatic Three way Ball Valve Q645F Pneumatic Three way Switching Ball Valve Q644F-16P Single acting Fault Automatic Reset Pneumatic Stainless Steel L-shaped Three way Ball Valve Q645F-16P Single acting Fault Automatic Reset Pneumatic Stainless Steel T-shaped Three way Ball Valve Pneumatic three-way switching ball valve/Pneumatic three-way diversion and merging ball valve/Pneumatic three-way reversing ball valve Q645F Pneumatic T-shaped three-way ball valve Q644F Pneumatic L-shaped three-way ball valve/Pneumatic three-way flange ball valve/Pneumatic three-way regulating ball valve/Explosion proof pneumatic three-way ball valve/Pneumatic with manual three-way ball valve/Single acting pneumatic three-way ball valveComposed of pneumatic actuators, three-way ball valves, and pneumatic triplets, it is a three channel rotary ball valve used for medium diversion, merging, and flow direction switching. Any pipeline can be used as an inlet or outlet. Pneumatic three-way ball valves are divided into two types: pneumatic three-way L-shaped ball valves and pneumatic three-way T-shaped ball valves, which can meet different production process requirements. Pneumatic three-way L-shaped ball valve is used to cut off two of the three pipelines, while pneumatic three-way T-shaped ball valve is used to merge and divert the three connected pipelines. The pneumatic three-way regulating ball valve is matched with an electrical valve positioner, and can be controlled by inputting a 4-20mADC signal and a 0.4-0.7MPa gas source to adjust parameters such as pressure, flow rate, temperature, and liquid level. The pneumatic three-way directional ball valve is equipped with a travel limit switch, solenoid valve, pressure reducing valve, and 0.4-0.7MPa gas source to achieve switch operation, and sends two pairs of passive contact signals to indicate the valve's switch. Pneumatic three-way ball valves are widely used in industrial fields such as chemical, petroleum, textile, power, food and pharmaceutical, refrigeration, papermaking, etc.
Structural characteristics and applications:
1. Compact structure, fast opening and closing, smooth flow channel, and low fluid resistance.
2. Good sealing performance: Utilizing the four sided valve seat material polytetrafluoroethylene elastic deformation to achieve leak free sealing.
3. One valve for multiple purposes: Any port can be used as an inlet without leakage, while a three-way valve can be made into either an L-shaped or T-shaped port.
4. Easy maintenance: After the system is depressurized, it can be inspected and repaired without removing the entire valve body.
5. Suitable for switching the flow direction of media and diverting or mixing fluids in pipeline systems such as water supply, petrochemicals, metallurgy, mining, textiles, energy, papermaking, food, steel, etc.
Selection and differentiation of pneumatic three-way ball valves:
Q644F (L-type) pneumatic three-way ball valve.
Q645F (T-shaped) pneumatic three-way ball valve.
Valve model: Q represents ball valve;
Transmission form: 6 represents pneumatic;
Connection method: 4 represents flange connection;
Internal structure: 4 represents L-shaped tee, 5 represents T-shaped tee;
Sealing surface component: F represents fluoroplastic;
Valve body pressure: 16 represents a pressure of 16 kilograms;
Valve body material: C represents carbon steel, P represents 304, R represents 316;
Design standards:
Design and Manufacturing |
GB12237-89、API608、API 6D、JPI 7S-48、BS5351、DIN3357 |
Flange size |
JB/T74～90、GB9112～9131、HGJ44～76、SH3406、ANSI B16.5、JIS B2212～2214、DIN2543 |
structural length |
GB12221-89、ANSI B16.10、JIS B2002、NF E29-305、DIN3202 |
Inspection and Testing |
JB/T 9092、API 598、GB/T13927 |
Technical Specifications:
Nominal diameter DN (mm) |
15 |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
Allowable pressure difference (MPa) |
≤ nominal pressure |
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Action range |
0～90° |
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Valve body form |
Two stage split casting valve body |
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Valve cover form |
monolithic |
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Cover type |
Bolt compression type |
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sealing packing |
V-shaped PTFE packing, PTFE impregnated asbestos packing, asbestos textile packing, graphite packing |
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connection method |
Flange type, threaded type (suitable for 1/2 'to 2') |
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Valve core form |
Three way ball valve core |
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flow characteristics |
Approximate fast opening characteristic |
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Leakage quantity Q |
Soft seal: zero leakage; Metal seal: According to GB/T4213-92, less than 0.01% of rated KV |
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basic error |
±1% |
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backlash |
±1% |
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dead zone |
≤1% |
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Configure actuator model |
GT, SR, ST, AT, AW series single and double acting pneumatic actuators |
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Control method |
Two position switch control, 4-20mA analog control |
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Executor parameters:
Model of actuator |
GT, AT, AR, AW series single and double acting pneumatic actuators |
gas supply pressure |
0.4～0.7MPa |
air connection |
G1/4'、G1/8'、G3/8'、G1/2' |
ambient temperature |
-30～+70℃ |
mode of action |
Single acting actuator: gas closed type (B) - valve position open when gas is lost (FO); Pneumatic opening (K) - valve position closed when gas is lost (FC) Double acting actuator: gas closed type (B) - valve position maintenance during gas loss (FL); Pneumatic opening (K) - valve position maintenance during gas loss (FL) |
Can be equipped with accessories |
Positioner, solenoid valve, air filter pressure reducer, holding valve, travel switch, valve position transmitter, handwheel mechanism, etc |
1. Gear type dual piston, with large output torque and small volume.
2. The cylinder is made of aluminum 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.
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.
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.
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.
Material of parts:
Part Name |
Material Name |
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valve body |
WCB |
304(CF8) |
316(CF8M) |
316L(CF3M) |
sphere |
2Cr13+nitriding treatment |
304 |
316 |
316L |
valve stem |
2Cr13 |
304 |
316 |
316L |
sealing ring |
Polytetrafluoroethylene (PTFE), reinforced polytetrafluoroethylene (PPL), para polystyrene, flexible graphite |
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Applicable Medium |
Water, gas, steam, oil, etc |
Corrosive media such as nitric acid |
Acetic acid and other corrosive media |
Corrosive media such as urea |
Control method:
Pneumatic three-way ball valves are divided into L-shaped and T-shaped, and the direction of medium flow is shown in the following figure.
The L-shaped pneumatic three-way ball valve is suitable for switching the flow direction of the medium and can connect two perpendicular channels;
The T-shaped pneumatic three-way ball valve is suitable for dividing, merging, or switching the flow direction of media. The T-shaped hole can connect three channels to each other or two channels to each other.
Pneumatic three-way ball valves generally adopt a three seat structure, but can also adopt a four seat structure according to user requirements.
Outline structure diagram:
Main appearance and connection dimensions:
Nominal Diameter DN(mm)
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15 |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
L |
150 |
150 |
180 |
200 |
220 |
240 |
260 |
280 |
320 |
380 |
440 |
550 |
L1 |
75 |
75 |
90 |
100 |
110 |
120 |
130 |
140 |
160 |
190 |
220 |
275 |
H |
Depending on the assigned executing agency |
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D |
95 |
105 |
115 |
140 |
150 |
165 |
185 |
200 |
220 |
250 |
285 |
340 |
D1 |
65 |
75 |
85 |
100 |
110 |
125 |
145 |
160 |
180 |
210 |
240 |
295 |
D2 |
46 |
56 |
65 |
76 |
84 |
99 |
118 |
132 |
156 |
184 |
211 |
266 |
b |
14 |
16 |
16 |
18 |
18 |
20 |
20 |
20 |
22 |
22 |
24 |
24 |
A、A1
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Depending on the required torque of the valveDifferent configurations result in varying external dimensions
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Henan Qiaoyi Valve Co., Ltd. mainly produces【Q644W Single acting Explosion proof Pneumatic Three way Ball Valve Q645W Single acting Explosion proof Pneumatic Stainless Steel Three way Ball Valve Q644F Single acting Explosion proof Pneumatic L-shaped Three way Ball Valve Q645F Single acting Explosion proof Pneumatic T-shaped Three way Ball Valve Q644Y Explosion proof Pneumatic L-shaped Three way Ball Valve Q645Y Explosion proof Pneumatic T-shaped Three way Ball Valve/Q644W Single acting Explosion proof Pneumatic Three way Hard Sealed Ball Valve Q645W Single acting Pneumatic Stainless Steel Three way Ball Valve Q644F Pneumatic Three way Ball Valve Q645F Pneumatic Three way Switching to Ball Valve Q644F-16P Single acting Fault Automatic Reset Pneumatic Stainless Steel L-shaped Three way Ball Valve Q645F-16P Single acting fault automatic reset pneumatic stainless steel T-shaped three-way ball valve/pneumatic three-way switching ball valve/pneumatic three-way diversion and merging ball valve/pneumatic three-way reversing ball valve Q645F pneumatic T-shaped three-way ball valve Q644F pneumatic L Type Three way Ball Valve/Pneumatic Three way Flange Ball Valve/Pneumatic Three way Regulating Ball Valve/Explosion proof Pneumatic Three way Ball Valve/Pneumatic Three way Ball Valve with Manual/Single acting Pneumatic Three way Ball Valve】We have a large inventory of spot goods available for direct sales at factory prices! We always adhere to the principle of "serving customers, developing enterprises, and giving back to society" in our practical operation, the business philosophy of survival through quality, development through service, and efficiency through management, and the corporate policy of "quality first, reputation first, management based, and service sincere". We carry forward the corporate spirit of "exploration and innovation, high quality and efficiency", and provide safe and reliable products and perfect after-sales service for new and old customers! All text, data, and images in this article are for reference only.
