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E-mail
76228885@qq.com
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Phone
15821339995
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Address
Jinshan Industrial Zone, Shanghai
Product Categories
Shanghai Shuangheng Valve Manufacturing Co., Ltd
Pneumatic two-stage loading valve, pneumatic three-stage loading valve
NegotiableUpdate on 01/08
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Overview
The pneumatic three-stage ball valve is composed of a three-stage cylinder and a ball valve, which realizes the controllability of the position of the ball valve. The three-stage cylinder requires a set of solenoid valves to control the circuit and complete the control of the valve. A flange ball valve is a rotating ball valve with a 90 ° angle, which has the advantages of compact structure, small volume, reliable operation, low flow resistance coefficient, good sealing performance, easy maintenance, convenient installation, and strong adaptability. Pneumatic flange ball valves are particularly suitable for applications where the medium is viscous, contains particles, or has fiber properties. Widely used in automatic control systems for industries such as petroleum, chemical, teaching equipment, light industry, high-voltage equipment, pharmaceuticals, papermaking, etc., for remote centralized control or on-site control. Pneumatic three-stage ball valve performance parameters nominal diameter (mm)
Product Details
The pneumatic three-stage ball valve is composed of a three-stage cylinder and a ball valve, which realizes the controllability of the position of the ball valve. The three-stage cylinder requires a set of solenoid valves to control the circuit and complete the valve control
Control of the door.Flange ball valve is a type of corner valveThe 90 ° rotary ball valve has a compact structure, small volume, reliable operation, low flow resistance coefficient, good sealing performance, and easy maintenance
Advantages such as easy installation and strong adaptability.Pneumatic flange ball valves are particularly suitable for applications where the medium is viscous, contains particles, or has fiber properties. Widely used in petroleum, chemical, and teaching industries
Equipment, light industry, high-voltage equipment, pharmaceuticals, papermaking and other industrial automation
In control systems, perform remote centralized control or local control.
Pneumatic three-stage ball valve performance parameters
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Nominal diameter (mm) |
15 |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
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Flow coefficient Kv |
21 |
38 |
72 |
112 |
170 |
273 |
384 |
512 |
940 |
1452 |
2222 |
3589 |
5128 |
7359 |
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Nominal pressure (MPa) |
PN1.6、2.5、4.0、6.4MPa |
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leakage |
Soft seal: zero leakage; Hard seal: ≤ 10-5 of rated flow rate |
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Valve body form |
Two section valve body (floating sphere) |
Two section valve body (fixed sphere) |
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Valve core form |
O '- shaped spherical valve core |
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sealing packing |
Polytetrafluoroethylene (PTFE), metal graphite wrapped gasket |
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connection type |
Flanges, welding, threading |
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flow characteristics |
Quick opening feature |
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adjustable range |
DN15-65 |
DN80-300 |
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250:1 |
350:1 |
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Applicable Temperature |
sealing surface |
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PTFE ≤ 150 ℃, RTFE ≤ 180 ℃, PPL ≤ 300 ℃, hard seal ≤ 450 ℃ |
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Configure execution mechanism |
Can be equipped with GT, AT, AR, 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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Pneumatic three-stage ball valve component parameters
Part Name
Material Name
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
Applicable Medium
Water, gas, steam, oil, etc
Corrosive media such as nitric acid
Acetic acid and other corrosive media
Corrosive media such as urea
Pneumatic three-stage ball valve
Pneumatic three-stage ball valve Actuator parameters
There are two types of three-stage cylinders available0-45-90 and 0-90-180, the piston moves twice as much at both ends after the intake port, and auxiliary pistons are designed at both ends to generate mechanical limitations
To achieve the middle position,It is easy to adjust the angle of the middle position using the external two end adjustment bolts, such as 20 °, 30 °, 50 °, 75 °, and 95 °
120 °, 130 °, 150 °, 175 °, etc.
position1 (middle position)
Gas source pressure enters simultaneouslyPort 2 and Port D, air is discharged from Port 4 and Port C, Port 2 serves as the internal piston for movement, and Port D is restricted internally by the auxiliary piston push rod
The piston is positioned at the predetermined locationMiddle position.
position2 (fully open position)
Gas source pressure enters simultaneouslyPort 2 and Port C, air is discharged from Port 4 and Port D, the internal piston of Port 2 continues to move, and the C flavor releases the auxiliary piston push rod restriction positioning
Make the internal piston smoothLida reaches the fully open position.
position3 (fully closed position)
Air source pressure entering4 ports, air is discharged from 2 ports, and the internal piston moves towards the middle direction to reach the fully closed position. We can provide 0-45-90 spring return model specifications,
When there is a gas or power outage, orAir source failure, the internal piston is forced back to the fully closed position by the spring.
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